I think AH has the best View system in the market.
In real life if you thought someone was behind you shooting at you, You would snap your head back like an owl to see what it was.
IL2's view system seems slower to me, and less agressive.
The option to save your view/head settings is priceless. Something that is impossible in IL2. In IL2, every pilot is the same size. In Aces High you can adjust your height with the arrow keys.