Dude if want a legit awnser here it goes:
The psp 3000 would be a paperweight. It does nothing but serves to Sony as a homebrew blocker. If you are going to buy the 3000, just buy a 2000 and but m33 on it. It would do the same thing as the 3000 but it would have m33 and looks exactly the same as the 3000.
I would buy a PSP Go, and pray that DA develops a hack/bypass to but m33 on it. If your willing to drop $300 on this thing, LBP+GTA5 on the PSP Go sounds good, but I would rather ultimately get a PSP 2000 and m33 it. With m33, you download free games, put homebrew on it such as psptube and kittencannon.