Ok I tried out the demo for XP.
I think the update for FSX has a bit more functions.
This thing is really good!
I had been flying the DH88 Comet

and was sick of the ridiculous FF. Loading up FSForce made a huge difference.
Elevator trim is excellent with great feel as the aircraft trims out. Controls are well weighted with no nasty spikey dead spot.
The DC3

is great too with a real feel of weight to the plane.
There is only one problem I can see ( apart from paying for it

It doesn't detect turbulence !
Which is a bit of a bummer as correction becomes a visual thing.
The trial has 10 flights but can be repeatedly downloaded apparently.
I'd shell out for it if it did turbulence.
Pete