I always liked the 6970 except for the oil checks. you'd have to deal with that everytime you got a temperature change. Built like a tank and I put on about 40 of the Motion retrofits. Excellent...

It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx