Hi everyone, I am looking for a tablet with the appropriate "bang/buck" ratio to use at our school. I would like to use educational apps with it (I guess this is obvious), surf the net, and access media. Expansion port for microSD/USB would also be an advantage, plus a decent battery life. Would anyone have any ideas? I am aware of the leading tablet contenders, but there are many I have no idea about. Thanks in advance for your help.