I'm embarrassed to say it, but damn it, Luke Bryan and Florida Georgia Line put on an incredible live show at Kicker Country Stampede in 2015 or 16 (can't remember what year) in Manhattan, KS when I was in college. Plus there was tons of very attractive girls there in bikini tops and jean shorts so that probably helped.
This post reminded me of a Jason Aldean and FGL concert my sister made me go to in Tampa, FL. I do not country and its definitely one of the bottom concerts on my list, but damn the scenery at that show was unreal.. For best experiences pretty much any show at Red Rocks is incredible and I have been to a lot. Back when I liked Bluegrass we would catch Trampled shows when they were first coming up with only 20ish people at the bar. Had a few beers with them back then.