Sorry for such a beginner question, but I never owned a tablet before thus I really dont know. So how big is an HD app (like those that would look beautiful on the Nexus 10's screen) for android tablets? I know they are growing in size, but what would be a reasonable estimate of the app size in a few years (2 years?) from now? I'm asking because I'm deciding between N10 16 GB and N10 36 GB.