well if you plan on playing/installing lots of HD games on your tablet you might want to get the 32GB model. 11GB is left to the user (at least in my z1). They don't allow you to transfer apps to sd card. So with HD games ranging from 1GB to 4GB you would be able to install a couple.So the 16GB model is 100 bucks cheaper, and still has the SD slot. I don't see much of a point in buying the 32GB model.