I think Joe Bonamassa get some great tones from his Marshalls, but worthy of mention (as far as Strat tones) would be Walter Trout, he is a modern blues player, but he is very under rated here in the states. He's old school, most of the time a 70's Strat plugged into Mark IV, end of story. I been listening to him for a long time. I believe he has been a Mark series user since the Mark II.
Carlos Santana still gets some great tones too....