I use a trackball mounted to my joystick.
Works better, and is cheaper, than TrackIR... and it doesn't wear out like hats do. (can only use it for Il2 tho)
It does give a good impression of head movement, and is easy to use. Requires your own modding.. I had to add duct tape to the lil' metal balls so it would move slower (and smoother in the game).
-SW