I cant decide which game they all look good: 1. alien vs predator online looks fun 2. left4 dead 2 looks a lot better than the first one. 3. battle field bad company 2? havent heard anything about this looks fun though 4. call of duty modern warfare 2 also, are any of these worth renting -mass effect 2 -dantes inferno -just cause 2 been outta the 360 loop for a while. halp??