The 2.8in touch screen is on the smallish side, though it looks clear and sharp enough with 320x240-pixel resolution and 65,000 colours. Sensitivity is about right – not so sensitive that you're pushing buttons unnecessarily, but not so tough that they're awkward to push
Our only problem with it was when using the virtual keyboard – it takes up the whole width of the screen and we found it a bit awkward to accurately push the buttons at the extreme edge. It came good with a bit of practise though.
The Xda Guide uses the latest version of HTC's TouchFLO interface, which sits on top of the Windows Mobile 6.1 operating system.
It not only looks good, it also makes virtually all the functions accessible with your thumb, so you'll have little need to resort to the stylus.