In the last week, I have purchased 3 fuzz pedals. MXR Classic Fuzz, Big Muff and the Skreddy Lunar Module. I really enjoyed the sound of all three so I stacked them and did a comparison. In my opinion, the LM was far ahead of the other 2! The LM is a tone monster and might be the best pedal I now own. The MXR to me was somewhat close in sound but just a tad thinner and the Muff was real thin sounding. I am still playing with the BM though. Gonna definetely look into some more Skreddy pedals. Not sure if I just got lucky with the Lunar Module(thanks to a TGP member. Thanks!) and scored a nice one or if they all sound that way but Im sold!