[Muffin Militia]

I would argue that the Original Halo: Combat Evolved was ahead of it's time in terms of console shooters, and that it was an excellent product, but since then the series have kept stagnating and offering the same thing with minor updates to people who want a blockbuster- like game to gobble up.

I think it's a waste of money to buy more than a single Halo game. If you are interested, get the third one or Reach.