I've had my Acer C300 Tablet PC for a few months now, so it's about time to do a review; especially given that I've been promising one for a while.
This entry is going to meander quite a bit. I'm not a professional reviewer/writer and I'm doing this in a rush between other stuff, so please bear with me. Feel free to ask questions or request clarification in comments. I'm going to assume you know the basics of the Tablet PC. If you would like more background on just what a Tablet PC is, you can visit the official Microsoft site. I should also state that I've been using Acer laptops exclusively for several years now, so it's difficult for me to compare against any other brands, Tablet or not.
My first experience with the Tablet PC was the Acer C100. l immediately saw the potential that the Tablet PC offered, but found that the C100 had some limitations that kept me from using it on a regular basis. For one thing I found it too small to use as my primary computer - I kept drifting back to my laptop for must computing, thus never having enough of my information on the Tablet to encourage its consistent use. Another contributing factor was the low memory capacity - 256MB maximum was just not acceptable. l wanted something that was either a simple slate, or a combination of a full-featured laptop and Tablet PC. When I saw the C300 announced as "the convertible Tablet that you'll want to use as your primary computer", I immediately ordered it, knowing it was the Tablet I was waiting for.


Here's a picture of the C300 next to the C100, and the C300 in laptop mode
Just so you know what my baseline expectations for a laptop are, here are the primary things I use my computer for:
Reading - web and electronic books
Email
Reviewing and annotating documents
Instant messaging
Audio recording
Brainstorming
Hardware
Here are the hardware specs of the C300 with some comments:
Processor - Intel® Pentium® M (Centrino) processor 1.50GHz, 1MB L2 cache, 400MHz system bus
I'm quite happy with the processor speed. I was very happy with my previous 900MHz laptop, so this isn't terribly important to me.
RAM - 512MB DDR SDRAM
It's good to see a laptop ship with a base of 512MB. I considered ordering my laptop with 1GB but didn't. I now wish I had. The specs say that there are 2 RAM slots, but I opened the back and there only seems to be one slot. I'm not sure what I have to do to upgrade, but it is something I'm going to do in the near future.
Hard Drive - 40GB 4200 RPM ATA/100
I think that hard drive speed is the single biggest speed limiter on any laptop computer. I wish this laptop came with a 5400RPM drive (or even the new Hitachi 7200RPM). Oh how I dislike that flashing hard drive light. The 40GB capacity is nice for carrying around those extra VMWare/Virtual PC images, but 60GB would be better. I've been pretty sloppy so far on disk management with this laptop, but my free space is still at nearly 7GB. I like lots and lots of fast disk space.
Screen - 14.1" XGA (1024 x 768) TFT LCD, up to 16.7 million colors
I'm quite happy with the screen size. I'm an odd man out when it comes to screen resolution. I've never been happy using any resolution higher than 1024x768, even on a 19" flat screen CRT. I find everything too small. 1024x768 suits me just fine.
This unit also has a built in light sensor to auto adjust the screen brightness. I was ok with this initially, but disabled it after a few weeks. It got annoying having the screen constantly change brightness as I moved around the office, and I found the screen was always a bit dimmer than I usually prefer. There may be ways to tweak these tolerances, but I'm quite comfortable with changing the screen brightness myself using the keyboard shortcuts.
Video Adapter - Intel® 855GME chipset with integrated Intel® Extreme Graphics 2, up to 64MB video memory
This is fine for me. I don't use anything that significantly pushes the video subsystem. Just about anything will suffice, as long as it gives me 1024x768 at High Colour. Over the Christmas break, I did play a bit of SimCity 4 (for me) and Impossible Creatures (for my son) so it was nice to have more detail enabled due to the better video memory. But I would have been fine with less. Any gaming itch I have is satisfied by my XBox. I really don't believe that the PC is an acceptable platform for gaming. Maybe I just worked in retail software/hardware sales for too long; thru the DOS gaming days, into the early Windows 95 era; Anyone remember autoexec.bat and config.sys?)
Network Connectivity - Built-in Intel Pro 802.11b, 10/100/1000 NIC, 56k modem
The wireless adapter is an absolute must-have for me. I've been wireless since the first Linksys WAP11 came off the assembly line. I opened one of the slots on the bottom of my computer yesterday and found that the wireless is a replaceable module. Given that Intel has just upgraded its Centrino line to support 802.11g, I'd say that I stand a good chance of being able to upgrade the internal wireless to this faster standard.

It's nice to see that gigabit Ethernet is becoming generally available, though the office is still wired for 10/100. If I have large file transfers to do, connecting to the LAN through the wired NIC is still the only way to go. 802.11b is just too slow.
As for the modem, I guess we will still need them for the foreseeable future. I'm hoping that wireless will become as ubiquitous as modem connections in the next few years though. I will not shed any tears when the modem as a computing device gasps its last breath.
Keyboard - Acer FineTouch 84-key keyboard with five-degree curve, inverted T cursor layout, minimum 2.6mm key travel
I love the five-degree curve on the Acer laptop keyboards. The key travel is great, though I would prefer a little softer touch like the IBM laptop keyboard. The placement of the delete key in the upper right also suits me fine, and I enjoy the inverted T cursor layout with the page and home keys located on either side of the up arrow key. The only thing I don't like about the keyboard is the placement of the Home and End keys. I use my laptop to write and program. When programming, especially, the Home and End keys used in various combinations are very important, but the fact that I have to use the Fn key to engage either makes it nearly impossible for me to use them. I always fumble over Ctrl-Shift-Fn-End. Needless to say, if I'm going to be doing an extended bout of programming, I plug in a real keyboard.

Touchpad
I prefer the Touchpad over the pointing stick but rarely use it. When I'm at a desk I use my Logitech MouseMan Traveler.
Pen
The C300 uses a Wacom digitizer and pen. The pen is the standard large Wacom pen with eraser and side button. It doesn't ship with a second smaller pen like the C100. However, the large pen does mount in the chassis unlike the C100 which can only mount the small pen.

CDRW/DVD Combo Drive
This machine ships with a 24x CD burner, which is a nice boost from my previous 8x, and of course the DVD is a necessity for all those MSDN and U2 DVDs.
Here are some other general comments about things I like and dislike.
The C300 includes USB 2.0 and Firewire. My MOTU 828 external Firewire audio interface works just fine with my Cubase SX 2.0 recording software and plugins. When I ordered the new laptop, I decided to hold off on purchasing a docking station for it, but was pleasantly surprised to find that it worked with the docking station I already owned for my previous Acer laptop!
I wish there was a way to configure ClearType settings for different screen orientations. ClearType doesn't look right when I change the orientation to anything other than the standard. Hopefully this is something that Microsoft will address in future Windows versions.
Battery life is great - more than 4 hours, even on wireless and generous power setting (i.e. Presentation mode). My experience is that after a couple of years, battery life drops off a steep cliff, so I'm not sure if this one is any better.
I really like the swivel hinge on this model. The C100 required engaging/disengaging two side clips. With the C300 you just twist the screen. The swivel feels sturdy, so I don't expect any trouble from it.

Acer ships a nice 3M screen wipe cloth with all their Tablet PC models. This is a nice touch. They clean my glasses wonderfully too.
This model doesn't ship with a floppy drive, but that hasn't caused me any trouble so far. I have a USB floppy drive in case I ever do need one again.
Oh, the unit looks nice - black and silver - though I really could care less about the look. This ranks very low on my priority list.
The Tablet comes with a 4 in 1 Card reader in the PC Card slot. This is great for my Olympus digital camera that uses SmartMedia. It doesn't support Compact Flash, but I already have a PC Card adapter for that.
I rarely use any of the software that's included with a PC, so I can't really comment on what shipped with the Acer. l think it was some Antivirus
Software, CD burner and DVD player app. I uninstalled all of the apps and really didn't look at them.
Areas for Improvement
The M key is starting to rub off already. I normally wear my keyboard down pretty quickly, as I do a lot of touch typing, but this key is actually scratching off. I don't know if this is covered under warranty. It's really not an issue with me, as I never look at the keyboard anyway, but it has already caused others difficulty when they use the computer.
I wish the C300 was a bit more ergonomic for holding in Tablet mode, both portrait and landscape. I find it a bit clumsy to hold in certain seating positions, especially vertically. With the C100 I preferred vertical mode. With the C300 I prefer horizontal. Of course, because it's a full sized laptop, it's fairly hefty to carry around. I knew that going in. For me, it's an acceptable price to pay for having a full featured laptop and a Tablet PC.
I find that the pen calibration is a little off in the corners, especially the bottom and top right. This is significantly improved over the C100 though - something I found so annoying on that model that it was a show stopper for me.
The system runs pretty hot at times, but that's to be expected on a system with this speed, but I have never had it feel uncomfortably warm to hold in Tablet mode.
The unit shipped with the hard drive divided into two FAT32 partitions. I had to manually convert the partitions to NTFS and merge them using Partition Magic. Thankfully this worked without incident, but it makes me hesitant to ever rebuild the system using the included recovery CDs.
Conclusion
Overall I'm very happy with the C300 . I'm finding that the more I use the Tablet, the more I like it. I believe the Tablet PC has a big future, especially with the significant improvement that Tablet PC 2004 (codename Lonestar) will bring. In 2-3 years we will wonder how we ever lived without Tablets. There's something wonderful about being able to sit in a comfy chair on a Saturday afternoon, drinking a Tim Horton's coffee and writing a computer review on your laptop screen in your own handwriting.