Yeah, the PSPs are too different from each other. There's only a few differences like weight, how the UMD slot opens, the shape of the bottom buttons, where the speaker phones are, and a mic. Also, the saturation of the screens are better the newer the PSP you have. But not too big of differences. I'm just excited I'll finally be able to get one! I've wanted some for a long time. And I already have a list of 20 games that I really REALLY like!