Jay,
To me the best to drive and the most stable, system wise, is GP3. With a
nice, fast system GP3 does not look too bad graphically. I do like the way
the car handles and also think the AI is the best of the lot. If you do the
huge 2001 update (90 meg) and run GPX for the add-ons, you'll have a pretty
nice racing sim. Too bad though that there is no Internet play.
The cars in F1CS2000 drive way too heavily. F1RC was fun at first but then
I lost interest. There are too many quirks and system mishaps in that game,
making the experience less than enjoyable. Plus the AI is not good.
That's my brief take,
Alanb