I had the box filled, but the absolute best were Santana in 1970, The Allman Brothers (you gotta hear them live), Jackson Browne (on a night where he was pissed that a political candidate had published his play list, so he abandoned it and took audience requests for over two hours), Elton John, and the BSO at Tanglewood every year.
The most fun crowds were at Jummy Buffet and Grateful Dead.
The worst were CSN when they got together after Crosbys release to cash in on their nostalgic value without respecting their fans enough to rehearse first.
This was a fun exercise,thanks.