Halo3 is a great step forward for the series, but not for the generation, if you go back and look at Halo2 next to halo3 it is a very big difference, but nothing compared to the really life feel that is haze, CoD and killzone. But Halo3 will move systems and become the best selling game this year, maybe only passed by GTA4. Its just a different feel than the other games, but great in its own way, just like the wii games :P