It's a launch game. Games have sure evolved a LOT in the last year and a half. It was good when it came out, but is now a bit behind the times. Try something like CoD4 and see what you think----or as you said, MGS4.
Also, try Singstar with a PSeye...it's a blast.
PSN ID: Sorrow880
Gamertag: Sorrow80
Wii #: 8132 1076 3416 7450