
Avoid Sony
I'd recommend steering away from Sony tablets. I invested in a Sony Tablet S, which by all accounts had a shelf life of a few months. No word from Sony on JB updates.
Normally this isn't an issue but the modding community is steering clear of at least the Tablet S as there are no ROMs for this model (only a rooting) despite it being out for about six months. You can't even do a nand backup.