https://www.ehx.com/blog/electro-harmonix-announces-re-release-of-op-amp-big-muff This one looks pretty amazing. I guess I'm in that age range where when I think fuzz I want to sound like Smashing Pumpkins. Nice demo and stories with Billy Corgan in the video. I have a WH Swollen Pickle Mk IIs I may sell it and get one of these. The comments on EHX's facebook page for this video are absolutely hysterical. You can sum up 50% of the comments are, "Nope, Billy Corgan is wrong, that is not how Billy Corgan wrote/played on Siamese Dream, I read something in some magazine in the 90s that said it was something else!" The other 50% of the comments are, "Did you watch the video, that's him in the video showing exactly how to get that sound!"