Can I nominate Marillion - all their albums are very listenable and they are (or were) terrific live. Also the late, great John Martyn - a master technician and a very interesting live performer (you were never quite sure what to expect with John). I saw him storm offstage in Bristol because the sound wasn't to his liking and also do one of the best gigs I ever saw at Bradford Uni donkeys years ago on a cold winter's night when most of his band didn't show up. It was him, his bass player and a drum machine. He did a load of his classic acoustic songs off the cuff - it was fantastic.