I've got 2.5 (real) hours in Bell 206's. One in a 206BIII (like in the game) and 1.5 in a 206L3 (good downloads from Hover Control).
For the record, the sim helicopter has absolutely nothing in common with a real helicopter. A real helicopter is a gyroscopically sound flying machine, the thing that looks like a helicopter in FS9 is like mentioned above, an eggbeater.
If it is any consolation, if you can fly the helicopter in FS9, you will be a pro in a real helicopter. I had 20 hours in FS9 before my first flight, and I had no problem transitioning to the real thing, including take-off, hover, and landing. My two biggest difficulties in the real helicopter were tail-rotor trim during forward flight, and overtorque.
In the game, the helicopter always flies straight(unless you fight it), in real life, you have to use a little bubble(like on a level) to use the tail-rotor to make the helicopter go straight. I had the helicopter at about a 30* deviation from foward flight, but it felt right, the only indication of a problem was the bubble, and the foward speed was about 80 knots instead of what we should have been doing, 115 knots.
In the game, there is no warning tone for overtorque, nor is there any damage done to the helicopter if you overtorque it. In the real thing I brought it up to 98% torque on accident, it was really easy, and bells and whistles started going off like crazy!
Anyways, I'll see how the whirly-birds fly in FSX, but until then, I don't fly simulator helicopters.