Halo Ce was just SO classic, you cant deny that is the best, but as far as ridiculous fun Halo 2 comes in close, and 3 for that matter but CE is the best
(i have played more reach then all of them, really only because now i have a steady internet access, and i love playing swat, otherwise id never play the other gametypes, i cant stand AA except for running, and the 'nades are to much! lol so that way i didnt even factor it in, its wasnt like the original halos, didnt have that feel, still love it though)