I have one. It's great. It's quite an amazing bit of tech.

I wish they would split out the market, though, one for the educational market for tests and the like, and one for the professionals with wireless and more open capabilities.

I would like for instance to ship images of graphs to use in a web page. Or to use it as a keyboard to type equations and calculations into documents. Or to have it connect to PyPI say to grab programs that can calculate complex equations.... etc.