I must agree that G2 is the king of the hill (bust flight model, best graphics, best overall, at a kingly price too) but it really isn't the only game in town, FMS can be a pretty good sim if you can find the realisitic planes... it's so easy to make planes for that there are a ton of not very realistic planes out there that scew most peoples opinions of it... Ikarus Easyfly is another good option if you've not got the big $$ for RealFlight... you can get it for $50 new with an RC Transmitter style Joystick. I have a long indepth review/comparison of a bunch of the sims on my rcmagazine site if you want to do even more reading on it.