My old ipad2 is about to blow a gasket. We have the gs3 so seemed logical to get a Samsung Tablet. I see there are several different ones and maybe something called a Nexus? Looks like a new Nexus is about to release but there is a Tab 2 and Tab 3, a Note and the Nexus. We probably should have wifi plus 3g/4g and no smaller the 10". I'm having some issues figuring out the diffrences between the different Samsung tablets so looking for some advice.