Hi, New to the board.... glad I found it.... I am considering picking up one of those fairly cheap Android Tablets off e-bay. For the price they seem pretty good ... but just wondering how much of a paper weight it is going to be? Can anyone reccomend one over another and what specs should I be looking for? Once I pick one up how upgradable are they? Memory, OS, apps etc. I am very new to this world so I would appreciate some guidance. D.