Our own Brett Gilbertson wrote an article for www.gottabemobile.com this week that discusses good hardware and software design for touch screen PCs. The newly released Motion J3500 is a great example of the best hardware design for touch.
The simple key to improving the touch experience is that the touch screen should not be recessed into surrounding plastic bezel.
As you can see in the picture below, the exceptional Hydis AFFS+ screen on the J3500 sits flush with the bezel. That makes it easy for your fat fingers to get into the corners of the screen (to close and minimize windows) thereby eliminating one of the most frustrating aspects at Windows and touch.
It also helps with the Wacom Active digitizer pen too!