For Gameplay,,AH has alot of pilots and fun game features
great events with nice historical maps,,,but IMO the main arena is about as far as u can get from a ww2 sim, fantasy terrains and constant cryin on radio chan,,,great customer service and good future ahead though
Il2 is awesome,,amazing graphics, but limited to small servers and pretty demanding on the box
Warbirds has the best events IMO,,,but poor "day to day" arena.
they seem to be more focused on ww2 match ups with Axis/Allied split,
and a rolling plane set,,but almost twice the price as AH and less then 10% of the AH #s,,,lots of box tweakin to get set up also
I like all of em,
AH and the old WB 2.77 are what i have on the box now
(even though very low #s in 2.77, it makes for some great 1 on 1's and i get to fly the Ki-84 for a week a TOD)
my .02