The TS model's pretty good for blues but give the Natural OD a go. A very transparent OD tone that responds to the guitar well. Great for that JJ Cale-ish "larger than life strat" tone (with a strat ). Also, try the vibrato for some Bo Diddley Magnatone type stuff. As I said above I'm not that fond of the rotary or the Univibe but ymmv as ever. The joy of this box is that once you've dialed in something you like with the knobs you can write it with three or four button pushes. I like intuitive UIs