Danelectro Cool Cat Metal (V.1), without competition.
Allegedly based on some Fender amp's preamp section.
Doesn't sound metal at all, and overall just absolutely horrible and utterly useless.
Never tried any pedal that sounds as abominably and unequivocally bad.
Kind of like playing your bass through a small crappy heavily overdriven guitar combo, and the speaker not being able to handle the pressure (not a broken speaker, just a speaker that can't handle the sound pressure).
I am pondering if it might be broken, it sounds broken, and not in any possible good way.
The Cool Cat Metal II, which I also bought, is a completely different circuit, as far as I gathered a heavily modded Metal Zone circuit, much tighter than a Boss Metal Zone, and completely fizz free, and sounds genuinely great.