The HACK said:
Raffi, you and Sergio ever attend a Driving Concept Event? Any thoughts?
Dan, I've never taken a Driving Concepts course, but:
1. Many of the instructors from the LA and CCC chapters also work for Driving Concepts;
2. Carl McGinn, the chief instructor for the LA chapter (and I think for all the California schools in general) is the owner (or one of the owners) of Driving Concepts;
3. They have an excellent reputation; and
4. I had the pleasure of having Carl McGinn as my instructor last Friday at Buttonwillow. He is absolutely awesome.
I would recommend his school anytime. After I get a few more schools (6 or so) I will take the Racing school put on by Driving Concepts to get my racing license!

:bigpimp:
Later.
EDIT - PS: BTW, Judy Ray is an AWESOME instructor too, I just noticed her post.