I didn't buy any at all for MW3
I liked these maps, the little that I played them. I'm at a disadvantage now b/c I don't know them at all and everyone else has spots already set up.
I'm also better now than I used to be...but that doesn't say much at all.
Blops - .65
MW3 - 1.0
BLOPS 2 - 1.10
FWIW, the first time I played COD I just gotten XBL gold and I thought it was auto-aim like the campaign.