If you are waiting for a killer app for the PSP, this is the one to get next to GTA: LCS. If you like X-Men, get it now
Graphics: When it comes to PSP ports, much of the detail from the console version is lost in the process. In XMLII's case, the graphics are incredible for PSP standards. Camera angles screw things up a bit and the game can lag a little after saving.
Sound: The VO is still some of the best in any video game. The soundtrack isn't as remarkable as Shadow of the Colossus.
Value: After you complete the main game, replay it with four players with ad-hoc and infrastructure.
Tilt: If you have the console version, then skip this one. If you don't, pick up a PSP now and play it now.