Hmm tough decision all my friends play both games they both look awsome which game should i get

Halo 3, for replayability.
And the Forge!
And the Mythic Map Pack!

2 years on the market and still the number 1 FPS played on the planet.

I own both (Killzone2, Halo3), and if you're like me, you'll have more fun with Halo than with Killzone.

Killzone is awesome, don't get me wrong, but the awesomness and the fun factor didn't last long for me. Too generic maybe?

I personally enjoy Killzone 2 over Halo 3. The story and gameplay for me were just down right awesome. I'm not a CoD freak either so I thought the controls were perfect.

Halo 3 is alright, but I still don't think it is anywhere near as good as Halo Combat Evolved was.

get graw2 it's better then both

It's not that hard of a decision. One is definitely better than the other, and that is the one that you should get.

Just look at the two games and decide which one sounds closer to what you are currently looking for. They are close enough in general quality that just asking others probably won't get you anywhere, and they have different enough features that if you look into the details of each game you should be able to figure out which sounds more to your liking.

This. KZ2 is really that good.

Having played both, imo opinion KZ2 is better. Rent them, or borrow them from a friend and then decide which you like better.

KZ2 is just starting to open doors..... H3... well it is halo............ Exactly it is halo. jump into something different.

I just read your entire post history, and you appear to be a Sony fan. Go with Resistance 2.