While there is no one answer to this questions there are some guidelines to follow. Don't purchase the first Tablet you find in BestBuy. This is an important decision and it is best that, if possible, to use the Tablet PC before purchasing it.

It is recommended that the purchase be put off until Freshmen Orientation. There will be demo units available for student's to use.

However, STUG has an episode of Tablet Tips, Tell me which Tablet PC to Buy, where Jared and Travis recommend the Lenovo ThinkPad X61 (which is officially supported by the university) and the Toshiba M700 (which is not officially supported, but still acceptable for Speed School).

The best advice is to use whatever Tablet PC you plan on purchasing before buying. Everyone is different and writing on a tablet that is comfortable is probably the most important consideration.