While I've never played the PS2
version of Gitaroo Man, I have played the PSP version. This game is just plain awesome!
The levels were really fun to play with funky music, but Master Mode definitely will kill you!
It took me forever to beat that third level, and now I'm contending with the fourth. The new Co-op stages are fun. Metal Header was definitely the highlight of the game. If you somehow come across this game, buy it! Get it and enjoy the funky frustartin of Gitaroo Man!