Tough call. It’s shifted through the years. It was once a tossup between Eddie”clean head” Vinson’s “Just a Dream” and his “Back Door Blues”. I prefer the renditions with Cannonball Adderly’s group backing him up. Nowadays it’s probably the fantastic Glasgow 95 festival rendition of “5 Long Years” by Clapton. The guitar work is un believable. Stevie Ray Vaughn’s Texas Flood is another biggie for me.