Posted this in the other thread but probably better off here:
My tips for loadout would be:
Attachments: Red dot/Silencer (nothing else! Rest are useless.)
SMG: MP5/UMP/PP/P90/Last one
Attachments: Red dot/Silencer/Rapid fire/Extended mags (nothing else)
Secondary: Either of the 2 revolvers
Perk 1: Sleight of Hand/Extreme Conditioning
Perk 2: Quickdraw/Assassin
Perk 3: Dead Silence/Stalker
Killstreaks: 3 uav / 5 pred / 7 chopper
Deathstreak: The one that makes you kill your 1st person in less bullets.
Is all I use and works pretty well, uavs are very good but don't rely on them as lots of people use jammers. I find that choppers get more kills than strafe runs so are a good choice at 7. Preds are always a solid kill/double kill.
Other general tips:
If you're going around a corner use ADS just as you walk around, will get you that kill if somebody's waiting there.
ALWAYS look at your radar.
Try to pay attention to where people spawn ie. if you're pushing the left side on ctf where are the opposition spawing? How close do you have to go to C domo before they spawn at A? When you start noticing these things you'll be able to have a very good idea of where the entire other team is.
Use 3 sensitivity.
If you don't knife much use Tactical button layout.