Okay, so we often get people who are looking to get a PSP (either to hack or not), so a chart detailing the differences would be helpful. Here's my preliminary chart... However there's also differences you can't really put on a chart, such as how solid the system feels and such like that, so I was thinking maybe a new sticky/guide could be made detailing the differences, and including videos showing the different systems. I've only got a 2000 myself, but I know some people have multiple kinds, so any videos showing the physical differences and a compare/contrast thing would be welcome, if anybody's willing to contribute. I mean just simple stuff, like how it fits in your pocket, showing where the controls/differences are located (such as the video-out on the later models, the moved analog stick on the Go, and the memory stick slot on each model). The OS on the systems are pretty universal, it's mainly the physical and feature differences people would be concerned with.