No, I couldn't find a third that stood out in the way these two have. I can't remember too many bad gigs, but thenn I've got more selective as I've got older.
Best festival would have to be the Knebworth in 1974
The Allman Brothers
Van Morrison
The Doobie Brothers
Mahavishnu Orchestra with Jean-Luc Ponty
Sensational Alex Harvey Band
Tim Buckley