among those i've used, i'd say a Keeley modded Boss DS-1, AMZ OD Pro or a Rocktek Silver Dragon.
i've never used a Jekyll & Hyde before, but i don't think you can go wrong with that when it comes to versatility. it's kind of cheating though, since it's actually two pedals in one box.
too bad i never got to test a Tonebone when i had the chance.