Here, you can find suggested airplanes and links to their web sites.
There are many airplanes, freeware or payware, you can find at :
Flightsim.com
Simviation.com
Avsim.com
Sim-Outhouse.com
Also at Razbam.org (payware)
Alphasim.com (payware and old FS9 freeware)