I had
this Lenovo netbook for a while. Off the shelf, it was awful where performance was concerned. Windows 7 isn't made for a touch device, so I wound up writing my own utilities in Java to launch applications, do some monitoring, etc. I also stuck a solid state drive in it, used a blank copy of Win7 Home (to get rid of the Lenovo crapware) and doubled its RAM for performance.
For FRC, that tablet is pretty good if a team knows how to program an interactive touch display. It's only slightly larger than the classmate. It can do dual touch (though getting that through to Java is next to impossible without custom JNI libraries). It's lightweight. Java can emulate several things, including a USB device or keyboard -- so it can replace a button board while also showing the state of the robot.
However, the interactive Java display can go on other displays as well. Look for other touch netbook convertibles, not just tablets. Having a netbook that works with Windows out-of-the-box will save you compatibility problems.