Most amazing surprise band I ever saw was Montrose without a doubt. Saw them at Winterland when they were the opening act and they just tore the doors down. Saw them every chance I could until Sammy left the band. Probably 15 times. Then followed both Montrose and Hagar through Montose's Gamma and Sammy's solo career until Sammy joined Van Halen and then stopped seeing him until he brought Ronnie back on his Chickenfoot tours. Was unfortunate Montrose killed himself as there were plans for a Montrose reunion tour with Bill Church and Denny Carmassi.
Winterland......respect!
As for the Floyd, I still believe the Final Cut is one of the most under-appreciated releases of all time. Not their best by a long shot, but too often overlooked.
On Waters’ first tour - Pros & Cons IIRC, I saw him hit the stage with Eric Clapton on guitar and I vaguely recall maybe Phil Collins on drums?
Show was at the Rosemont Horizon, think I was in high school!
I also caught Gilmore live on his first tour, great stuff.