I've never tried Halo before, the only Halo game I own is Halo 3 but it was complete crap in my opinion, because of that I didn't bother buying Halo Reach but I will probably get 4 just to try it out and see how it's changed.

i will most likely pick it up around Christmas because ive played all of them and so far its been getting some really good reviews... but for now its Hitman Absolution all the way!