Here are a few of the big bands I have seen. Plenty more I cant remember.
Anthrax, Exodus, Helloween, Kiss, Metallica, The cult, Ted Nugent, Skid row, Dio, Iron Maiden, Motorhead, Megadeth, LA Guns, Helloween, Wasp, Black Sabbath, Stephen Pearcy(post ratt)
Best sound was Anthrax (euphoria tour). Loudest was the first time I saw kiss, ears rang for about 3 days. Loudest audience was Iron Maiden. It was so loud that the crowd drowned out the music half the show.
Most memorable was seeing Wasp at a very small club. I stood a few feet in front of Blackie Lawless the entire show.
Worst show was the second time I saw wasp at the same club. The air conditioning was out and it was hotter than hell. Blackie amazingly played a full set, not sure how. I was dying just standing there.
If I could go back in time I would go see Zepplin at their peak.