I felt the benefits of the BMW driver training (intensive course) were:
(a) Comparing each class eg E82 125i, E90 323i, E90 M3
(b) Sharing with a fellow enthusiast ie driver a passenger per vehicle
(c) Venue eg beautiful Phillip Island rather than any common circuit
It allowed me to explore the limits in a controlled environment before subjecting my own vehicles to extreme treatment, and was personally more satisfying than other track days or driver training events.