Hey I'm going to need your help and suggestions?

Hey I'm going to get a lot of money and best buy gift cards for Christmas and I was going to get more games for my x box 360. I already have Guitar Hero World Tour, Guitar Hero 3, Guitar Hero 2, Halo 3, Call of Duty 4, and Call of Duty world at war. I don't want Rock Band 1 or 2 and I can't get Grand Theft Auto. What should I get. Also I'm already going to get Gears of War 2 and I getting the Verizon Wireless Blitz so any suggestions I would appreciate. P.S. I know this was long but thanks for reading. :)