Firstly, thanks guys for reviewing the different input devices, it was a great review that will help when it comes to picking the best way to use Skritter.
having said that, I would like to add my comments from using a couple of devices for several months. Perhaps others can add their experiences after some longer term testing.
I started using Skritter on a tablet PC, an HP Touchsmart, about a year old, running Windows 7. I found the screen is very responsive and it is a very realistic experience writing directly on the screen with a pen, just as you would with pen and paper. One down side I have found is the feel of writing with the tablet. The feel of a pen on glass isn't quite right and somehow takes away from the overall experience.
I also use a Wacom Bamboo on my desktop PC and the experience is very different from the tablet. It does take some time to get used to writing on the Bamboo whilst looking at the screen, but once you are used to it, then it is as easy to use a using a mouse for normal PC operations. I do find it difficult to orient the tablet correctly all the time and I usually write my first few characters at strange angles until I can get comfortable. The feel of the Bamboo is excellent, the pen feels exactly like a felt-tip pen on paper and this really makes it more pleasant to use.
Recently I have also been able to use an EeePC tablet PC as well. This is only a few months old and is also running Windows 7. I found the overall experience similar to the HP tablet, but the responsiveness of the screen was not as good. I found I had to press on the screen harder to get every stroke to appear and this made the whole experience much less enjoyable and I had to be a lot more deliberate and careful when I was writing. This can be a good thing as it meant I didn't rush through words, but it wasn't as 'fun' to use.
I am very happy with both the Wacom and the HP Tablet and use them all the time, the EeePC is useful for its small size and weight t and hat makes it perfect for taking out and about and, as it is a third of the price of the HP tablet, there are many reason to use it, but it is not as good to use for longer periods and soon led to a sore wrist!
I hope these comments are useful, but what are the experiences of other users? How well does using a mouse or touchpad relate when it is translated to writing on paper? Has anyone had good or bad experiences with any of the input methods?