I just bought Mega Man Maverick Hunter X a week back. It is now my new portable fix. Here is a summary of the review I have put up recently:
Good:
- Beautiful 3D graphics
- Excellent side-scrolling gameplay
- Mega Man: Powered Up demo
- New playable character: Vile
- 25-minute anime
Bad:
- Slightly difficult gameplay
- Remixed soundtrack, while it is great that they did it, is hit-or-miss
- Voiceovers: see above
- Short length, even on hard
Capcom has done a great job on the PSP, from Darkstalkers Chronicles to Maverick Hunter X. It is definitely the best time to own a PSP.