I got the Google Nexus 7 and if i was going to get a tablet over all of those i would get the nexus 10... The nexus 7 is sweet, however, like everyone else has said, you need a lap top to make them work 100%.... I would get a laptop... and for what you need it for they are really cheep...
also i stay away from ianything just due to the fact that unless you have ieverything then all that shit is ioverpriced... It all works together nice but if you just have like the i pad without the ipod and mac book you lose a lot of the functions that make them cool...