>>626I work at a retro game store, and have only seen one come in for over a year (which I bought myself)
I've been having a blast with the Vita, definitely my favorite handheld of all time.
I soft modded mine, and it can play some RPG maker games and PC VNs.
It runs PSP games better than a PSP, emulates a ton of systems, and is a swiss army knife of retro gaming in general.
The memory cards are prohibitively expensive though, which is a definite downside if you're not using an SD2Vita card.
Currently I'm having a blast playing Freedom Wars, although it gets frustratingly hard near the end.
>>662 you can install VPKs through Vitashell, you can also wirelessly move them to your Vita using Vitashell's FTP function.
There are other methods for installing games, most sites that host files explain the process.
>>651 I definitely reccomend JPKG, Easy RPG, Cavestory is always a good pickup, and you'll probably want the Higurashi VN program which can interpret a ton of VNs. There is also a solid PSP emulator, but I don't remember the name off the top of my head.