I'll get both CoD>9000 and BF3.
I personally see BF and CoD as two seperate games and just have fun with them individually.
I play Black Ops more often though because it's fast paced, matches are quick etc, but if I have the time I'd like to play BC2 again because of the epic scale of the matches, plus vehicles etc.

But yeah, I'm not gonna waste my time picking favourites between these two awesome franchises.

I'm starting to see a pattern here: people are raging at Blops because of lack of local dedicated servers. Let's pause for a moment and look at the PS3 side of things.
Lol but either way, MW3 better have good dedicated server support, allow people to run their own etc. Even right now playing in Australia the only people who own dedicated servers are the ones who want to run Nuketown 24/7, thus resulting on like 2 or 3 normal servers, in which are either totally full, totally empty, playing Search and Destroy(I hate that gamemode), or just have bad latency.
Servers are also crashing all the time. I'd be in there having a nice killstreak of oh say 943 when all of a sudden...

Well I find fun when I'm playing the other maps, it's pretty worth it imo.
I raged even more back when I played CoD4 earlier last year when everyone in Malaysia was playing Killhouse on Hardcore, flash bang city imo