I bought a Fulldrive 3 mainly because it was smaller than my old Fulldrive 2, but it does a not bad "Dumble in box" on the comp-cut mode, so much so that I decided to sell my Zendrive clone. The Zendrive has more of the Dumble mids, the Fulldrive more high end and is more touch sensitive and cleans up better in response to the dynamics of your playing. I not only ended up with a smaller pedal, but one fewer on my board as well!
Sorry for the sloppy playing, I have a new kid and I'm out of practice. In the song Fulldrive is first, Zendrive second. In the solo piece Zendrive first, Fulldrive second.
Michael Kelly Hybrid Special - Overdrive - Fender Superchamp XD with a touch of reverb - Apogee ONE Mic - Garage band no effects/editing