I just finished my 6th Free For All game; and on a pretty good note. Went 30-12. I like the game, and a lot of the annoying things from MW2 have been removed. It's great to finally play without getting tubed or command'od. Right now, my most beast setup is MP5K with Sleight of Hand. The game before this one, I came in 2nd place.
The maps are alright, and don't look that great. But they are small, and there is always a lot of action. Which I love. I hated shit like wasteland.
So for the gameplay, I would say it's great. But the graphics do seem a bit on the weak side; after a few games though, I got used to it.