Call of Duty: Which One?

Which Call of Duty should I get? Call of Duty 4: Modern Warfare, or Call of Duty: World at War?

Plz answer Plz and ty!

dk they both are pretty good (equals)

COD4 if you want a modern one

COD:WaW if you WWII with co-op and Nazi Zombie mode (VERY,VERY, FUN!)

lol it sounds like WaW is better but overall there both pretty much equal

Both.WingedHero