Which game type in COD: MW3 gets you the most XP?

Obviously this changes based on your proficiency in a game type along with a myriad of other variables, but generally speaking, which game type in Call of Duty: Modern Warfare 3 gains you the most XP (on average)?

I've been having really good luck with Kill Confirmed. You get XP for kills, plus for their tags, plus if you can find a) other tags from friendly kills or b) red tags from enemy kills you'll also get XP. A really good thing to try and do is to go back and get your own tags after your killed, it's a +250 XP bump.

I've been playing hardcore games the last few times, and in general I get a lot more kills (and die a lot more, too).

I would, too, say Hardcore Kill Confirmed, but it might not be easy to find a lobby for that. If not, then play Hardcore Domination and stay at defense, if playing run&gun is not your thing.

Team Defender gives you double XP when your team has the flag.

Team defender is good.

If you get about maybe 5 to 6 kills a game you should level up fast. At this rate you get about 500+ XP each game.

Search & Destroy if you're good. Just go around getting about 10 kills or more a game and you'll level like no other, but don't do it if you're not down to try hard all day.