(Very) Glad to hear that you like the physics. If you want to tweak
the side force (using the editor) I can outline some steps
to do that.

There are more airplanes than you might be aware of.

In addition to the airplanes in the default list (first category),
there's a second category that includes variants of the 30 or so
originals. There are over 70 additional variants (airplanes) in FS
One. They range from a 3-inch span Aerobird Xtreme to an electric
ducted-fan park flyer BVM Bobcat jet up to many full-size airplanes like
the Ultimate aerobatic biplane with a constant-speed propeller just like
full-scale. In each case, the Scaling Wizard scales the model size,
mass, propulsion system, aerophysics, etc. Everything is automatic, but
you can selectively override the auto-scaling and change the airplane
weight, motor, propeller, etc to your specifications to match a known
model or create an entirely new airplane based on one of the originals.

There's now a new FAQ item that includes the full list of ~70 variants:

I heard about the 30 plus airplanes and helis in the sim, but where are
the 70 extra scaled variants? (Q1021-FS1, 10/15/06)

http://www.inertiasoft.com/fsonefaq/#Q1021-FS1

Michael