I was going to say Iron Maiden as well, but it was their Legacy of the Beast tour in 2019 for me. They still had more energy than most of the young bands I’ve seen. It was also my first time being on the floor in an arena, and it was like the crowd was a huge living thing that pulsed and swelled, it was awesome.
Side story: the band The Raven Age was founded by Steve Harris’ son George, and was an their opener that night. I overheard some guy in the bathroom say they sucked and sounded like “boy band metal.” My opinion of them wasn’t quite so negative, but thought the “boy band metal” label was hilarious.
But we’re exactly the right crowd in their eyes, we need it the most. Saw the same kind of people while heading into an arena for either Metallica or Iron Maiden, I forget which one. Maybe both.