BUY BUY BUY.
This, quite simply put is THE most addictive game in Multiplayer I have ever played. I've now clocked over 10 days of online play and still keep going back for more.
Now with this GOTY edition, you get the free 4 maps that you would normally have to pay for from your dashboard.
If you've been sitting on the fence with this one, get off it and crawl to the checkout. Army style.