I found X-plane V9.x most suitable if you have a good GPU card installed in your PC (about 110€, I use the GTX 650 Ti). It makes a huge difference in responsiveness and detail. You can test the X-plane version in demo mode to see if your PC can handle it. MS FSX may be nice to look at, but X-plane has much more realistic feel. A good joystick or yoke with pedals and engine controls will help, but the Saitek I have seems to have an unrealistic dead region in the neutral position.