I have a few pedals from this series, the Noble Screamer being one of them. I also have the Blues Disorder. What I found interesting is that I expected the NS to be much stronger in the midrange than the BD. That isn't the case. The blues breaker circuit is a flatter EQ than the tube screamer circuit but in Keeley's application it seems they made some changes. I bought the NS because they used Tim Pierce's Nobels OD pedal to trace the circuit and there has been a good bit written about that pedal. Neither of these pedals are on my board but I hang on to them because there will be a time when I want those tones. I have the Muse, now the MK3, on my board as well as one of the AT Mod.