If you buy a retail PSP, make sure the letter code is K or below. K is 2.71 (easily downgraded). I went from 2.71, to 1.5, to 3.40 OE-A and it was a breeze. Now I'm running NES, SNES, ScummVM, and all kinds of cool programs on my PSP. As for storage, don't get the hard drive, lots of stuff isn't...