My personal experience with the marshall pedals (i've only tried the jackhammer) is kinda bad. I bought one of those new "tone lock" ibanez pedals, the smash box, and that so far is the most distortion i can get, and it has LOTS of settings, so i dont know if you want a recomandation (sorry about the spelling) i wont tell you to buy the Ibanez smash box but, make sure you try it next time, you'll be suprized.