Brits are better but just my opinion. Younger guys and better theatrics. But they have more money to put on their shows.
Some of these guys in both bands started this in the early '90. But they have added new substitute players over the years to be able to tour every year. That's how they split into two bands.
A few original members must be in their 50's, far younger than the originals though.
For any Led Zep fan - GTLO - Get the Lead Out. Fucking awesome. They don't put on wigs or costumes, just paly the music. Always have two guitarist on every song, sometimes three. I've seen these guys every years for the last seven. A must for Zep fans. So loud you need earplugs. Ah, just like the 70's.