I have never seen dogs yet, either. I will say if an opponent gets a chopper gunner (whatever its called) run for the f'n hills. It is downright nasty.
		
		
	 
Yeah, the higher scorestreaks in this game do serious damage. I think I got 7 or 8 kills with my Stealth Chopper. I don't think many people have classes  with Blind Eye equipped. So even if they have a launcher or Black Hat to kill the chopper, it can be tough to get a shot off at it.And IMO, the aerial Scorestreaks are way better than the ground ones. I do still run with the auto turret quite often, but it seems like my Guardians and Turrets get taken out rather quickly most of the time. EMP grenades, grenades, C4, Black Hat, lightning strike, you name it.