RCP Tracks are the gold standard in RC racing and considered to be the best Mini RC race tracks available. Practically all organized racing is done on RCP tracks, so if you want to race, you should be practicing on RCP. You can easily set up an inexpensive track in your garage. The interlocking tiles allow different configurations, and additional tiles are cheap.
You can setup a Mini-96 with it's smaller times in a one car garage, or combine 2 of them for a larger more flexible setup. If you want wider lanes, look at the other tracks with the larger tiles. And finally, for the ultimate racing expierence, install a Giro-Z timing system and grab a few transponders.