TrackIR 5 is a great device, very good for the "Heimfliegerei.Im ownership, since February of 2010.
Whether surface or rotor, it makes a lot of fun and gives a real or almost real flight feeling.
It works under Win 7 64 bit without any problems and I can honestly "equip" it with 5 stars.
In addition, it is supposed to be compatible car racing, I have not yet tried but.
Have fun mabo