Check this source of high quality RC models for X-Plane flightsim, mostly free downloads.
It is a great option for mac/linux users, and it is super realistic simulation including weather,failures and realistic FOV flying.
Using a 6CH USB controller works just great.
http://www.vskylabs.com
Here are some vids:
[youtube]http://www.youtube.com/watch?v=m-kjxWEQ3w4[/youtube]
[youtube]http://www.youtube.com/watch?v=p2NNWwYMMKw[/youtube]
[youtube]http://www.youtube.com/watch?v=YE6fbvLulOo[/youtube]
[youtube]http://www.youtube.com/watch?v=JaBUqlKnVhQ[/youtube]
[youtube]http://www.youtube.com/watch?v=g-rDIUFpbZs[/youtube]
[youtube]http://www.youtube.com/watch?v=E2P37Wxom9c&feature=relmfu[/youtube]
[youtube]http://www.youtube.com/watch?v=IQWbZzxw6NM[/youtube]
[youtube]http://www.youtube.com/watch?v=LIw6TbuTZSM[/youtube]
[youtube]http://www.youtube.com/watch?v=CV3G7FJVYmY[/youtube]