The Chiron Deluxe is the reason my opinion of this pedal changed.
I got it working when I got my Psycho Simian version. I set it up as a transparent clean boost. It passed the test with no noise or color. I set it up with a light crunch, and it was great. I added some top end to use as a lead boost, and I loved it. I even went full tilt and used it to crunch the clean channel, and it had the juice to boost. I really liked it until I put it up against my Echoplex Preamp/Bias pedal. I just prefer the Echoplex boost. It's just preference though. The pedal is still good. I'll try it on bass.
I took it to the 8x10s and tried it out through my rig. I also came into an MXR Thump bass preamp to try out, and so I shot both out with the Chiron Deluxe. I got the boost and punch out of the Monkey with little effort. I dialed in a bigger bass and got it right where I want it, and it passed the test. The Chiron Deluxe just smoked it though. The low end saturation with the bass switch engaged is something special on that pedal that didn't girth up the same with the Monkey circuit. The Thump got me some nice warm character with great tone shaping, but no grit. I didn't get gain out of the pedal, just volume. It failed my test. The Chiron Deluxe is still the champion.
I was kinda bummed that my Monkey pedal lost all its matches. I really like it. I was starting to sour on it when I realized something: I just compared a Digitech Bad Monkey to a Klon Centaur. No shit the Chiron Deluxe is the winner! Apples to apples, the Psycho Simian pedal is the best version of ths Digitech Bad Monkey that exists. But, ummm... yeah. Klon.