I can't believe I forgot about my personal favourite :eek: .... The MXR ZW-44 (Zakk Wylde model). I love this pedal because it's so transparent, which means you hear the tone of your guitar boosted and not just the pedal. I think it's basically modeled after a Boss SD-1, but slightly refined. So, don't look at the name Zakk Wylde and think mega distortion, because that's not what this pedal is. True enough, when put infront of a dirty amp, it can take you to levels of distortion you've never dreamed of, but it's defanately great at giving a clean signal a good boost into slightly breaking up and to some crunch.