I enjoyed my time with Halo Reach, but I played it a ton and I'm basically done with it. Right now I'm enjoying Halo 4 just as much.
My main problem with 4, is lack of maps with the game. I have no problem how Halo will set aside some bigger maps for BTB and what not, but its annoying how regular slayer only has like 5 maps or something. BUT some of this is fixing it self nowadays cause you just hop into the forge playlist and play there, so I've been pretty happy with the game lately. I just need to get myself some double exp's going, havent even got 50 yet to check out specilizatins.
I got my first unfriggin believable today in Reach doubles.. Reach was terrible when it first came out, TU Reach is actually one of my favourite games in the series. Better than the clusterhell Halo 4 is --- Was going to put an awesome RVB quote here, but there's just to many to choose from. So make your own