No, never tried Dekoni pads. During the last Drop of the Teaks I got very interested in them based on one of the Massdrop discussion comments, but ended up not pursuing it--though I did purchase and test the Dekoni attenuator rings. If I have any opinion on Dekoni pads, it's just that there are a lot of contradictory things said about them by users. One Head-Fi post that was linked on Massdrop's Discussion was extremely positive (it compared 3-4 different Dekoni pads, though on which headphone(s) escapes me now). But you don't have to look far, either in Massdrop Discussion or Head-Fi, to find others with less kind things to say. Pad-rolling is kind a crapshoot. Even well designed & made pads (the Dekonis seem to be both) can sound pretty terrible on a given pair of headphones. I've come to see pad-rolling as an exercise in sonic "match-making": you make your best guess about which pads can help a pair of headphones, then put them together and see if any chemistry results.