The two that immediately spring to mind for me are Batfink and Lengro, however Bighorn deserves a a very honorable mention.
Best fight I've ever been part of in AH was duel with Batfink and I vs Bighorn and Lengro, in D3A's using only the rear guns. Bat and Bighorn flew while Lengro and I gunned. It was the most impressive flying I've ever seen two quality guys put in. To see both of them switch all normal dogfight doctrine around so easily to maneuver in front of the other was amazing.