The RS/6 can perform AMAZINGLY well if you pair them with high-end products, especially Ayre and Linn products -- which is what I heard them on when I first fell in love. I'm still chasing that sound trying to get away with using lower priced gear. I'm not there yet, but getting closer with every new purchase and tweak.
Try using all Morrow cables. I've used the RS/6 with NAD and now Creek. Using all Morrow resolved music better than Anti-Cable, Transparent, Audioquest, Kimber and Tara Lab cables. The higher up the chain for Morrow, the better it gets; even the low priced Morrow cables are good - but don't expect miracles at this level. I'm really loving the MP3, SP3 and MA3 level right now.
Also, to really make the RS/6 magical, toe them in very slightly, and try various wall treatments on the first reflection points at the side walls (if you have a smaller room) to reduce reflection, or put them in a fairly large room. You'll hear what you've been missing because these speakers can perform very well if given a good environment.