I owned a Bad Monkey and a Screamin' Blues. I had them in a chain before a solid state amp. The Bad Monkey was more subtle but, as mentioned, nicely middy. The Screamin' Blues had more grit and could add more distortion to your signal. The Bad Monkey prodiced a nice overdriven sound. The Screamin' Blues, on the other hand, did overdrive well enough, and with more gain it functioned as a nice distortion pedal, too. Both were great pedals, but I preferred the Screamin' Blues. The SB also seemed more touch sensitive -- I played softly and cleaned up my signal; I played harder and I was in distorted heaven.