Why do you need a new one? What's wrong with trhe old one?

Mine is Absolute Zerr, and people always say "zero" but I don't really mind.

Chuck Norris can't kill a cyborg from the future. Kratos or Ratchet could f****** kill both of them without breaking a sweat. Ratchet has a RYNO and Kratos has flaming chain-blades.

It really depends on what difficulty MC is playing on. If he's on easy, he can take on the whole Covenant by himself.

If you just got a 360, get Oblivion Gears of War, Mass Effect Halo 3, and CoD 4 to start you off. Any (or all) of these 5 are great buys that will have you playing for a long time.

Then, Orange Box, Bioshock, Rainbow6 Vegas, and a racing game (PGR4, NFS most wanted, Forza2, and Bunout Revenge are probably the best available.)

Then get a GH or Rock Band.

I would also look into Perfect Dark Zero, Marvel: Ultimate Allaince, Shadowrun, The Darkness and GRAW. Rent em or borrow from a friend, they may not be worth your money, but I had fun from all of them. And You can buy PDZ and MUA foraround $15-20 used.

You have the advantage of being able to get lots of old games, used, for lower prices. I got my 360 last year at Christmas time, and I got some pretty good deals on used games.

I have strayed from your question though. If you liked Halo 1 and 2, why wouldn't you get the third? It's quite a bit better than Halo 2.