What's the best kill streak award for MW2?

I'd say predator (5),harrier (7), and either pavelow(9) or chopper gunner(11) depending on how good you are. I'd prefer pavelow since it is still amazing and you can still run around and go on a killing rampage while your pavelow is getting a ton of kills. A predator missle is easily obtained and will guarantee you one kill and most times give 2 which will easily achieve your harrier. You harrier often gets 3~4 kills depending on how long it stays up. The harrier will also give you that pavelow easily.