need new game...

my 360 is starting to collect dust, so i know its time for a new game. im thinking of getting one of the following:

-Lost Planet

-GRAW 2 (when its out)

-Crackdown (when its out)

i've played the demos for all of them except for Crackdown (its downloading now) and they all seem enjoyable. what do you guys think?

dont get lost planet, i rented it and i played one match of it, it sucks.   And the fact that graw is really old makes it outdated, just wait 8 days and pick up crackdown