I just paid for the R6vegas maps and its a couple of new crappy maps and then some that are just redone (killhouse redux).
No mas for me. The old maps are great. Just wait until you have to buy multiplayer altogether later.
They'll give you one map (the hook) and give you the "choice" to upgrade later for a nice fee.
Thats essentially what they are doing now except you get more than one map with the game. That will soon fall to 4 maps included, then 3, then 2.....
To tell you the truth im having more fun with the Wii anyways.
The 360 is as high maintenance as a woman who keeps asking you for your credit card.