Unipivots are not right for the Decca. Lots of resonance reflects back into the arm....you need solid bearings.Sorry stringreen, I gotta disagree with you on this one. Not all unipivots work well with the Decca cartridges but those that do work better than gimbaled or tonearms w/ captured bearings - IMO.
dhcod, I haven't tried a Moerch tonearm with the Decca (never even occured to me to try it) but having owned a DP-6 in the past I would guess that this is not a good match. YMMV