I started doing driving schools this year and had soo much fun at Mosport and Cayuga (with BMWCCA and Raven) that I sold my '91 M5 after two sessions and bought a '98 M3 which I am slowly transforming into a combined daily driver/track car.
The M5 was a great car, but just too heavy to really go for it at the track.
I am totally completely addicted and can't get enough, much to my wifes dismay!!!
Vico