Dude your not really making any sense, Halo 3's multi is not even fun to me anymore since I got COD4, and I was a hardcore fan of Halo multiplayer before I played COD4(I must say though that sticking someone is still the best feeling you can have in online multiplayer, for a shooter anyway). You want bigger maps and your gonna trade it in for Orange Box or Halo 3? I have all 3 games in question here and COD4's multiplayer deff. has bigger maps, better strategy, more replayability, and is just way more fun than the other two. Do yourself a favor and give COD4 a little more time man. I know the servers are freakin out but its actually gotten better and you know with the amount of people that play it will get fixed completely. Bottom line: Don't trade it in, give it more time and you will see that it is far superior.

The Orange box is awesome though, and even though TF2 isen't bad its deff. the weak link compared to HL2 and Portal. Get it for the singleplayer alone and you get your money's worth.