Yes, 21 pilots is amazing. They do use electronics a lot, but somehow manage to play in tune. Josh Dunn is an amazing drummer and Tyler Joseph has so many talents it's unreal. His voice is one-of-a-kind and always clear, with or without auto-tune.
The Foo Fighters have been my favorite live-band ever since I first laid eyes on them. I mean, who else breaks their leg and keeps on playing to finish the concert? No one. There is no one more genuine as Dave Grohl, and don't even get me started on his music. I've seen my first Foo concert 22 years ago, and my 7th last August, and they never ever disappointed me. If anything, they get better. Their sets are always 2.5 hours + because they have so much damn good music. But Twenty One Pilots comes as a good second, or maybe even shared first spot. Those two go from two awkward shy boys to a 2-man band that blow your mind once on stage. And these bands are among a few that I can listen to all day long and every day.

OK, enough band flattery :)