I think live at the regal is the quintisential blues album. In that style, I've heard nothing better. BB is interesting, and he makes good use of the major interval additions like the major third and major sixth (major sixth automatically gives it a jazzy dorian vibe.)
Thing is, I can't listen to too much stuff of that style straight. I like it, but its like anything, you get tired of it. That's why sometimes i'll like to listen to some bossa nova type stuff, sometimes maybe i'd like to hear some modal stuff like herbie han**** or miles davis.
Do me a favor and check out the coltrane song Mr. P.C. It's a blues form, but he does so much with it, and the solos are jazzy. I think you'll really like it, cause not only are the solos great, but the riff is one of the catchiest riffs I've heard. I'm not saying that this stuff is better than straight blues, i'm saying its a refreshing alternative.