I have to agree with the EHX English Muff'n, both pros and cons. Save for one: there absolutely needs to be a twin-channel option, with one being the tubey-clean that we think of when we think tubey, and the lead that we have come to know and love from the existing pedal.
The same also holds true for the Mesa/Boogie V-Twin. It was so frustrating, that I traded it, along with my Boss Rotary Ensemble, EHX BMS (big chassis), and my beloved Roland Jazz Chorus, just for a big Mesa/Boogie Mk. III head that I can't even use in my own house.
"It sort tastes like the flavor in your mouth when you burp...after you've been eating a lot of ah bread sticks or something."