Bands I've seen since 2010:
Elton John
Steely Dan (twice)
Joe Bonamassa
Eric Clapton
Buddy Guy / Johnny Lang
Alison Krauss
Tedeschi Trucks Band
Black Crowes
Foreigner
Paul Rodgers (of Bad Company, Free)
Kansas
38 Special
The Marshall Tucker Band
Blue Oyster Cult
Foghat
Molly Hatchet
Atlanta Rhythm Section
The Artimus Pyle Band (of Skynyrd)
Fired Guns (Blackfoot)
Avett Brothers
The ones from "back in the day" (that I remember - we're talking the 70s and 80s; sometimes I didn't remember the bands we saw the previous night, LOL)
Styx
Foghat
The Outlaws
Aerosmith
Billy Joel
The Allman Brothers
Blues Travelers
Little Feat
ZZ Top
James Taylor
Fleetwood Mac
Stevie Nicks
Kiss
Lynyrd Skynyrd
Natucket
White Snake
Night Ranger
Pat Benetar
Stevie Ray Vaughn
The Eagles
The Doobie Brothers
Best concert - Skynyrd. It was exactly 10 years to the day that their plane went down. When they came out for the encore (Free Bird, of course), Johnny Van Jant said, "There wasn't but one person could sing this song." Then he put his brother's hat on the mic stand, the spot light hit it and they eased into an instrumental version of the song. The crowd did the vocals. Man, what a moment.
Best Guitarist (MHO) - Buddy Guy. His strat didn't need to go to the restroom after that show; he played the sh|t out of it! 76 years old to boot! Next would be Stevie Ray Vaughn and Joe Bonamassa. Of course Clapton still holds his own. (Derek Trucks ain't no slouch either).
My short list: Alabama Shakes; great throwback groove and sound. Awesome vocals. Check em out if you haven't already.