I tried searching for some good helicopter sims and got C4 based on lots of glowing reviews. I got done with the training and found that it is rather arcadish. I can't "barrel roll" or do other crazy stunts with the helicopter and try to flip it / crash it. All you can do is just take-off and maybe land really hard damaging your landing gear, etc...
It seems very fun though with a twist joystick. I can't seem to figure out how to work the throttle, my top speed is about 125-135 knots and max altitude is about 1200 feet ASL.
I've been playing Jane's F-15 and gotten used to 1100+ mph NoE, cruising at 50,000' ASL, etc...
Are there more realistic combat helicopter sims out there?