The J3's have more options though, like bbe Headphone etc, whereas Digizoid only has one variable. I'll try and get both and eventually return one but some opinions from experienced users would be useful. I've read your review of the DO1 dfkt, when you said you preferred the digizoid compared to bbe did you mean just the Mach3bass or did you mean the whole bbe settings.
Sure, the whole BBE bundle gives a lot more options - I only meant the Mach3Bass option compared to the ZO's bass. Phones that I prefer with tweaked treble (like the IE8 and such) sure benefit a lot from BBE ViVA or BBE Headphone, while the ZO of course only would affect their bass regions.