Thinking of picking up a Vita, I missed a ton of PSP games and nothing like some new kit to get me motivated to clear out the back log. How do PSP games play on this?
The PSP games generally look stunning on Vita because the OLED screen is higher quality, and operates significantly faster than PSP's LCD screen (No ghosting !).
The Vita control is better because of dual stick support. You can tweak the button/stick mapping. In the worst case, it should be no worse than the PSP control.
Without UMD, loading is also faster (and more quiet) on Vita.
The bonus is: PSP games tend to go more easy on the Vita battery.
The restrictions are:
* You can't capture PSP game screen using the snapshot key combo (Press Home + START).
* You can't listen to music and play PSP game at the same time
* Not all PSP games are compatible with Vita. You can download the compatible ones from the Playstation store on Vita. But you may need to download some of them via a PS3.