RE: Simulators
From what I've seen the FS2 is probably the better of the two sims. However, the system requirements are pretty high for the FS2 as compared to RealFlight.
You can also find a few suggestions on simulator do's and don't's on [link=http://2ndrcflightschool.com/simulator_tips.htm]Flight Sim Tips[/link]
Happy Landings