TRACKSIDE in Brookfield WI. www.trackside.com
Because (in no particular order):
1) Great facility (100x60 carpet on road/oval, 70 x 50 indoor off road)
2) Great on site RC hobby store with big time part support for RC
3) Great owner/announcer
4) Great regular racers.
Try it out: January has the US Touring Car Championship Race when all the BIG BOYS will be there.