I’ve been to several great gigs, but there are a few real stand-outs... It Bites at the Astoria on the Once Around The World tour, just unbelievable... Level 42 back in the very early 80s when they were still "who?"... probably the single best one was Mike Stern at the Jazz Café. MS was absolutely on fire that night, plus he had Alain Caron on bass, the best fretless playing I have ever seen... one of AC’s solos was so damned melodic, the tune actually got stuck in my head and I found myself whistling it next day.
Worst/most disappointing gig ever was Pat Metheny's Trio, 10th April 2000, Birmingham Symphony Hall. A great trio, Pat with Larry Grenadier & Bill Stewart, it should have been amazing... but I have never in all my days seen such a poor choice of venue. A jazz trio in a gigantic symphony hall, FFS. Place was 80% empty and there was absolutely zero atmosphere. The same band & set at Ronnie Scott's would have been superb, but as it was it was flatter than a crepe. In fact, 'crepe' pretty much sums it up as a live experience.