I too have driven all four and raced at all but VIR. VIR was not reopened until after I retired from racing but it is now my favorite of all tracks, not just these four. Elevation changes and variety of turns are greater at VIR as well as the run-off areas. Supposedly there is one of every type turn possible at VIR although the Skip school may only use the South course rather than the full course. I believe it was Carroll Shelby who said something to the effect that one lap at VIR (full course) was like a race at the Glen. Probably overstated, but still a great track in my opinion. Mt. Tremblant would be my second choice and as others have stated the surroundings there are the best. I have not been there since it has been improved. In fact, back then, the trophies included pieces of the old track surface that had been repaved in only the worst spots. Should be a great experience regardless of the venue.

__________________
Formerly 914Geezer