All's I can say is that whenever I do play through my amp (more often than not, I just don't bother plugging in anymore when I play despite only having electric guitars at the moment), I have a psychological need to play through my ProCo Rat distortion pedal.
Have a Boss DD-3 as well, along with an MXR Distortion +, an MXR Phase 90 and a Boss PH-3 phase shifter. They're all sitting in the boxes, rarely used.
Loves that Pro-Co Rat.
Was thinking of getting a wah-wah pedal again...haven't had one since the 1980s...but can't be bothered.