Fuzz CITY!
Haha. I can't justify getting rid of any of them yet either. The Mastotron and the Mammoth are obviously pretty similar. But they aren't identical, and most of my favorite basses are active, so they both see play time. The Hoof is my muff of choice and the Polish is my OD, even though at more intense settings its pretty fuzzy. I don't tend to play "gritty" stuff. I'm either in Fuzz City or out in Cleanville.