I'm trying to decide on an all-purpose overdrive. I'm not too happy about most of the transistor clipping I hear in pedals; I need something that's warm, organic and at the same time dynamic and clear. In a word: interesting. From blues to AC/DC-ish crunch, maybe just a little more. What would you suggest? Btw., I'll use it with a small all-tube 5-watt combo with a 12' speaker, not an earth-rattling stack.