What Daff said. WBIII's "tracers" are the most "realistic" of any online sim, and are user configurable as far as size and appearance. "Hit Sprites" the same.
As far as the "mushbirds" deal, this is a matter of stick scalings. I have very quick control response with my scalings, the FM doesn't feel "mushy" at all to me. For example, the WBIII P-38L rolls quite well, but "feels" like a 16,000 lb. twin engine prop fighter. The F4U and 190 series have wicked roll-rates and i dont feel any "mushyness" at all.
WWIIOL, AH, and WBIII'S FM's are all pretty-much the same. All the FM's have "holes", that's the nature of the beast. Little differences here and there but you can cover all three with a small blanket. Which game you choose is a matter of personal preference based on price, graphics, gameplay, system reqs, etc.
Cabby