CE easily. The background, the music, the creepy map descriptions, the funny ones when you are editing gametypes or settings, how quick and responsive it was, how it had this big fat letters that contrast and don't waste any screen space (I have to stand up and get close to read in MCC and 5), how instead of a list, it lets you see every option (level, spartan color, gametype) displayed in full glory... Beyond how comfortable it is, I love how it has easter eggs where you like type something and it shows a quote or a joke. And how it also forced you to beat the campaign not just in the highest difficulty, but in all of them. And that loading screen... you can't argue against that. Also where did the idle trailers went to? Only 2 brought them back.
I loved Halo 4's main menu. It was beautiful, the soundtrack brings back lots of memories. Same goes for Halo Reach's background art and upbeat music, I always felt ready for combat. Halo 3's menu was just serene, almost sad, but so glorious. Especially those loading screens. Seeing Africa in the background being glassed, you never forgot why you were fighting. I cannot wait to see Infinite's main menu.