All good picks. Try the Dead if you never have, it's country, rock, blues, and bluegrass together. Heck Garcia was a banjo player before he picked up the guitar.
You need to look up Howlin Wolf if you like the Blues at all. He was also a big influence on the Stones and other early Rock and Rollers. Thanks for the info on UGK, I'll definitely have to look them up now that I know they're local.