The polycount on the spitfire is 15,000 polys. 10,000 for the aircraft and 5,000 for the engine.
The polygon count for the Bf109F is 18,000. 14,000 for the aircraft and 4,000 for the engine.
Both airplanes have pretty decent cockpits that could be removed to reduce the polygon count below 10,000 very easily. In addition to these I have a Mig-3, P-38, Re2005, P-51A - P-51C mustangs, Hawker Hurricane that could easily got into fspc, though they would all need optimizing. I also have a lot of futuristic aircraft modeled for a game we started in January.
Here is a webpage with our future models. We have many ships, tanks, and aircraft already made.
http://www.skyunlimited.net/omega.htm
Skyunlimited Productions
http://www.skyunlimited.net