Hi. I am looking at buying an Ipad, probably second hand. My problem is I'm completely clueless to what model I should be looking for. All I want it for is browsing the net, and using it as an AV remote with something like Demo-pad. My OH said a camera may be handy as well? The Ipad 16g is the cheapest option, but I am not sure what 3G would bring to the table, would this be worth the extra money? Should I be looking at an Ipad 2?