I've nver used a D-style pedal, only have listened to demo's. I like sound the dumbloid and the Dude, never was a real big fan of the zen drive. But to me the dumble style pedals seem to better the marshall based pedals because their not real bassy and seem like it would be a great match with my great match with my 66 bandmaster for what I play. I play alot of my morning jacket, Zepplin, some blues like Hendrix, steepwater band, Gary Clark junior, and SRV. I also play some country. My current overdrive is a JHS moonshine and wanting something with a bit different flavor of overdrive. and the Dumble style seemed like a good choice.Or is the Dumbloid more like a Zendrive? These are very subjective comparisons, especially worded that way. It might be more helpful if you could mention specifically what you're looking for and what positives and negatives you may have experienced with D-style pedals up to now. Otherwise, prepare to get a whole lot of conflicting advice.