I moved to IL-2, and the reason is the rest of old Loose Deuce are there now.
Planes are more complex to operate, and every plane has its own quirks (cooling, engine management etc etc)
There are a bunch of servers of there with less than 83 players max in one ( one is more scenario-style, others are more like AH with or without RPS, win the game style, one I know of is total hardcore).
To say FM in AH is better than for example DCS - real pilots who have flown the real stuff (search youtube) can probably give you a good opinion, both DCS and IL2 are more detailed managing an airplane and punish you if you don't do it right, much like a real plane would.
Tried DCS, and as much as I like fiddling with engine controls etc, they are currently limited to a very small plane-set in WWII.
AH was always an easy and fun way to play with friends - changes in gameplay and low numbers in Euro TZ on too big maps made me leave, not the money, not the flight models.