I own the rd-3,never owned 2.There is a coherency to the disc that is better...but ive yet to fall off my chair hearing dramatic improvements.My freind had the rd-2 and recommended it.So its been a worthwile tweek however.I first spray with optrix then demagnitize.Clean,clean sounds man.I in my opinion cant see what they could have upgraded on that thing...money better spent elsewhere?I will say that i would'nt do without one though!
