Z.Vex Fat Fuzz Factory Vexter

It's a tweaker's paradise, if you like to turn knobs more than to actually play it's great. All knobs affect all other knobs, so it's hard to know what you're doing, even harder to "recall" settings. You can get many interesting sounds, but I find that most of those have constant feedback and noise as soon as you stop playing.
You have to use gate to get rid of the feedback, but then it doesn't sound so good and it chops your sound a bit like noise gate would.
It is also hard to use live in a band, because most settings don't cut through.
I would recommend this only to someone to use at home to have fun or perhaps in studio where you can tweak until you get it right.
I only took it to gig twice and eventually replaced it with Octafuzz.