Hard to rank e'm but...
1970's --Grand Funk Railroad in Little Rock...Sweet Sweet Connie was there. Heard I had a great time.
Creedence Clearwater Revial- JC Fogerty was on!
Three Dog Night--What a night, got laid twice with 2 different woman!
don't laugh...Cornelius Brothers and Sister Rose--put on a hell of a show in Jonesboro!
Bloodrock--I got F'd up! Still haven't found my keys!
Black Oak Arkansas -my ol' buddy Jim Mangrum..Jim Dandy to the Rescue...high times!
Those are just a couple that come to mind. Prolly some more but hey that was the 70's...I still have some dain brammage!