Pub chopper is usually a bad idea because your going to get a noob in there with you, hence, i never get in one without certain clan mates. I can understand the solo chopper argument, it usually works very well because theres probably no communication between the gunner/pilot in the enemy chopper and they end up sitting there with their thumbs up their collective ass for me to own.
But then again, I'm a dignified chopper pilot, and have a highly skilled gunner on call 24/7 (unless his lazy ass is drunk, hungover, or napping). This makes the full chopper much more enjoyable, as i get points for providing pwnage for my gunner.
Anti-Air, unless theres about 2-3 stingers pointed at me all at once, it poses no threat. Point, click, gone.
Mobile Anti-Air is a much larger threat, the best thing to do is to get the hell out of his visual range, move around him to a very different side, and get him when hes not looking.
Dummy Missiles. They pretty much own everything. Jets, Choppers, Tanks, Infantry. If you have a good feel for your chopper you can put them into just about any enemy target to get you as many kills as your heart desires. Enemy choppers tend to melt under them. It at least does significant damage so that your gunner can mow him down with his primary weapon.
Chopper Vs. Chopper
Why wouldn't you barrel roll? I tend to just strafe unless the enemy gunner proves he can hit a target moving only on two planes. If hes good enough to hit me in a straight line, i barrel roll, and introduce the 3rd plane.
A favorite trick of mine in closer combat is doing the barrel roll, losing at least 50 meters of height. At this point the enemy chopper pilot probably wont be able to resist diving to hit me with his dummy missiles. While this is occurring i do a 180, nose up, and fly backwards so that he passes over me, and my gunner has a positive TV shot on his tail. Even if the gunner misses you still have the prime opportunity to tear his ass to pieces with your dummy missiles as he shows you his broadside while turning back around to engage you.
Jets, with the right gunner, are very fun! Simply flare out, follow the jet, let your gunner pump a tv into him, and boom, instant humiliation.