At 5'11", bulkheads don't have enough legroom. I'll sacrifice a FEBO-friendly position to avoid it. It's not really aircraft-specific. They pretty much all suck.
By the way, if you look in the FAQ (where it says "Please check here first") you'll find discussions of seats and plane and all AA aircraft. I would think that someone new to AA would want to check out the information FAQ where very basic questions like this might be expected to be covered. Certainly beats asking the same basic questions over and over again.
Cheers.