The best was Zepplin in '75 in SanDiego. They played for 4 hours. The worst would have to be Queen in '76-77. Technically incredible, sound perfect, Night at the Opera was the show. Only problem that was all they played, no encore, nothing from there earlier albums. Lick for lick with the album, but only 45 minutes long and the tickets were $20.00 and unheard of at that time.