I began flight simulator on a Timex Sinclair, loaded from a cassette tape.I think i started "flying" in 1979.
I had to build my own controller with a plastic blue box and and radio shack buttons, and the 128K memory pack.
graphics??? you must be kidding. hard core, text based, B&W flite sim.
I know that the maximum speed that you can drill a cessna into the ground at full throttle is 217 mph.
Currently I have MS flite sim X , 2006, 2004, loaded. yes, you can fly a lear, inverted coast to coast on autopilot, then go right side up on the downwind leg of the pattern. with a hard bank at the righ time you can fly between the antenna on the Hancock building in Chicago. and regardless of what you have heard, flying under the bay bridge is not on the approach to SFO. but I digress...
The most realistic I have is X-PLANE. with 65 GB of scenery. Simply stunning.
I use CH Yoke & rudder pedals, and a keyboard.
I'm still waiting for decent graphics cards to catch up so running multiple monitors becomes more realistic.