So I after playing for 2 hours of playing this morning (working at 12) I have found that:
It's better than MW2 (imo)
Blackbird is a glorified recon plane and not worth 8 killstreak.
RC car is the most annoying thing in the world
Dogs are a great
There are no overpowered guns from what I can see as of yet
Also I like it how killstreaks don't add to your killstreak
Chopper gunner is pretty rubbish
And Gunship is actually the same as a Chopper gunner from MW2 (not an AC)
I have thoroughly enjoyed playing this morning - got my 11 killstreak dogs twice after buying them for 6000 points. and my K/D is sitting at 1.95 for now.
People who are looking forward to Black Ops . . . You should be :)