I have tried the ClearView simulator.
It does have a nice look, however it feels much like FMS and it does not appear to have much configure ability.
If there are planes and helis available that have a realistic feel, they do not seem to be included in the demo.
When I compare it to RealFlight G3.5/G4, Reflex XTR or AeroFlypro Deluxe, ClearView does not measure up.
It seems to be flying through jelly and response times are like moving in slow motion compared to more realistic sims.