I love Bo Diddley too, and Hendrix, but my first thoughts on blues are those I mentioned. SRV was great but a little goes a long way. Chris Duarte is very hit and miss for me, but when he hits, he hits big. I like George Thorogood - my favorite album his still his first one but I have several. I need to explore Johnny Winter more. I like Rory Gallagher. one of my favorite bands of all time is The Doors and they did some fantastic blues jams; they have to be heard live to really be appreciated, and I have nearly every bootleg as well as the Bright Midnight stuff. Love early Stones. I suspect there are a lot of modern blues players I'd dig, but there are probably so many of them I'd never get around to all of it.