I think I may have come off as too harsh in my critique of the Take On Helicopter physics: no, the FM (even with the Beta 1.04 patch I tested) is not perfect, and I stand by my assessment, but I still find it quite enjoyable, even at the Expert level. The fact that BIS is working with RTDynamics to improve the dynamics is a great sign and I think they should be commended for taking that action instead of accepting the product as it was.
If you're looking for a "real" helo sim, Take On Helicopters does quite nicely.
Shoot to Kill.
Play to Have Fun.