This page has links to lots of virtual flight sites. Many of the sites are for add-ons, which are extra planes you add onto flight simulator. More to come : )

www.fsfield.com: This site is the best set up add-on site I've found on the net. It's set up great- you can read the readme before you download it, you can see screenshots, leave comments, see what it has on it (costom panel, sound, and virtual cockpit) All they need is more planes and they could easily become number one!

http://www.simviation.com/downloads.html: This site has a lot of add-ons, probably the most on the net, and it's really easy to find a add-on for your version of fs, since it has a section for each version. However, it doesn't tell much about the planes until you get them, and the downloads are slow unless you're a member.

www.surclaro.com: This one has lots of add-ons, like simviation, maybe even competing for that title. This site also has a comment feature, and is set up fairly nice. It has some nice planes, and lots of them.

http://www.fsdownload.com/index.php: This is a nice site, lots of planes, adequate information about them, and nice setup.

www.fsimcafe.com: This one is pretty good. It has a section for each type of plane like general aviation, jets, etc. You can also see sceenshots of some planes. But there's no search bar, which is really needed, since they have a fair amount of planes.