I've learned from previous CoD's now not to get my hopes up.
CoD 4 -

WaW - Never gave it a fair chance, only played it like 2 weeks before MW2 came out and here and there since, I'm like rank 43 no prestige, KD = 2.78, killstreak = 48. (No boosting just bunch of noobs on there now lol)
MW2 - Played it for 20+ days but hated it, love hate. KD = 2.18.
Black Ops - Was very fun at he start, but quickly got very bored of it, now I can't even play past 1 game without being insanely bored. KD = 3.4+
I'll still be going to midnight release for it, it's like a gamers mini-convention.
Side note: Any of you guys in clans/teams? Like Game Battles or anything else?
Want to try and play more clan related in MW3, to me that's the funnest part about playing FPS's on PC, getting into vendetta's with other clans lol.