I have a Dr. Wattson and love the way it sounds, but also like to drive into it with a light gain pedal, the tube really brings out the character of the harmonics and get really good presence for standing out. A Plumes sounds great into it but also have a Fuzzrocious Lil Fella that sounds great too.
What drives do people like to stack with their SushiBox?
IMHO the UA, HWUA, PA, Finally and MORE make everything I run through them sound better with added warmth, depth and clarity. My Source Audio Aftershock and Bass Ultrawave completely lose any hint of digital artifact, even the dirts from my Zoom pedals that are pretty bad are almost usable.
These are my current weapons of choice

I was so close to getting the purple Lab Rat but I am delving into more synth things these daze and have a Donner B1 coming.