I'm planning on getting a SD card to memory stick adapter for my PSP so that I can play downloaded ISOs on it. I also plan to use it to play emulated PS1 games that ARE NOT from Sony.

With that taken into consideration, I'm interested in a PS1 emulator for PSP with the following specifications:

1. Are there any PS1 emulators for PSP that are better than Sony's official emulator? If so, in what ways?

2. Does the PS1 emulator offer video output? For me, this is a make or break deal. If it does offer video output, does it support resolutions like 240p and 480i? Is the video output quality any better than Sony's emulator? (I.E. less dithering and less jumpiness when changing between 240p and 480i?)

3. What controller options are there? Do certain emulators offer custom button assignments too?

4. What unique options do these emulators wield?

Thanks!