Without a doubt the 2 Beatles concerts in Chicago, had great seats for both I think one ticket was $15 the next year it was $20 LOL Neil Diamond about 18 years ago in Chicago also was awesome. Went to many "Teen Concerts" in the Chicago area and saw many groups as they were just becoming hits. Fun times. Tom Jones, The Spinners and Johnny Mathis wee others that appeared in "In The Round" theaters where just about all seats wee great. Miss that type of venue
Met Dick Clark outside one of the teen concerts and got his autograph, very gracious man he really loved young people.