downloading on vita is a real ass pain, it is slow as hell, will only download one thing at a time, won't actually install it until you turn it back on, and its very confusing on whether the setting for "enable wifi while in sleep mode" is supposed to be on or off (lots of blog type posts that give different answers).
It took like 5 days for my 32gb vita to download All Stars, GoW, Uncharted, FFX:2, and a few smaller games with a lot of hand holding and its almost full already. Ironically it only took 2 days for the Sony Rewards store to get the 32gb card to me. On the plus side almost all the digital games I got free from PS+ or store glitches (a few times this year buying the "demo" of the game for $0 also gave you the full retail version).
remote play off the ps4 is amazing though. I wouldn't recommend a vita to anyone unless (1) they already have PS+ (2) they already have a PS4 (3) they get it at a really great price, like under $100 - cowboom, amazon warehouse, store clearances, etc.