Also try Son Seals "Live and Burnin'" on Alligator. The first four tracks are pure smoke! The rest of the disk is quite good, too. Basically it's a set of power Chicago blues recorded in a smokey club in the 70s.
Aggressive, live, electric blues.....
After the recent Zep live 3 disc set, Hendrix at Berkeley 2nd show, and Allman Brothers Fillmore sacd...at other legendary live shows with stellar sound that come to mind...waiting for the remaster of Hendrix's Live at winterland...SRV live maybe?