So I've been playing this game a lot as of late.
I was hesitant to get it because I was hearing a lot of mixed reviews, but I found it for $50 and a warranty so I jumped right on it.
It's definitely a step forward from MW2.
I don't normally see people camping every corner or head glitch, and it seems as if the kill streaks aren't as powerful as they were in MW2. They actually take skill unlike the MW2 chopper gunner. There's 15 prestiges and they brought back golden guns, they also added a host of new camos that you can purchase using the new system "CoD Points".
Overall it's a great game and I can see myself playing this until the next CoD release.