Yes, I have it and the RFN Crusader as well. Both are great.
The Roland Laborie version has a few more animations in the cockpit as I recall such as unlocking the wings for takeoff and landing and wing fold. I haven't tried launching any weapons yet, but so far this version seems to have a bit more realism.
There are several model versions and based on which one you fly determines what armament you can load. The RFN model has a 2D loadout manager which I prefer.
Someone, somewhere mentioned the -P model was more accurate with the Laborie version but I don't know if that's true or not.
And, you're right the RFN doesn't cost anything -- and there's lots of repaints.
Hope that helps.