I use this fuzz with my guitar. Most bands I enjoy seem to use it and I was looking into grabbing one for quite some time now. 
 
Pros: 
- Amazing fuzz sound 
- Very simple operation, just three knobs, can't mess it up. Very usable range in the Tone knob. 
- No problems with controlling volume. In front of a slightly driven amp it doesn't push dB's too high, which was something I was worried about. 
 
Cons: 
- Print on the pedal came a little but misaligned hence -1 start in quality, but it's not a deal breaker by any stretch. 
- It's a huge pedal, pretty much the same size as my HX Stomp. Not a big con, but putting it on a pedal board might be problematic.