Like every one else I have only flown the one I have. Aerofly Pro and it works great with XP. Click on the links that I have here and you can read about the defrant sims out there. Then do a search at the bottom of the page for the sim that you think looks the best or looks most fun. You can read what every one had to say about there sim that way.

Here’s a post I made a while back after buying Aerofly Pro.
http://www.rcuniverse.com/forum/m_10...tm.htm#1085143

And here's all the r/c sim links I think?

Aerofly http://www.aerofly.de/

FMS http://www.netpackx.com/html/fms_interfaces.html

Great Planes http://www.realflight.com/

RC Plane Master http://www.realitycraft.com/index.htm

Reflex http://www.reflex-sim.com.

Ripmax http://www.ripmax.com/FS_Simulators.html

Dave Brown RCFS http://www.dbproducts.com/