I just got the last of my MA Silver RS the other day, and they're mounted & dialed in. Since I wanted Cherry cabinets, the RSFXs and LCR took an extra month to arrive, but the RS6's have been here about 2 months. I agonized over this purchase for a long time, hovering between Paradigms, Axioms, Rockets, Energys, and Mirages. The Gold MAs were noticeably a few notches above the Silver series, but IMHO not enough to justify almost double the price.
I've read about "Snotty English Speakers" for a long time, but now that I've heard these as a complete system, I can honestly say they are a real thrill. Paired with my Denon 3805 and 2910 DVD player, it'll be a long time before I yearn for an upgrade.
The only real difference I could discern between the R and RS lines was cosmetic - the RS cabinets are slightly more rounded on the edges, and the cherry veneer is absolutely flawless. My wife was adament about no more giant black vinyl boxes in the room, and even she thinks these guys are classy in that understated English way.
I decided to go with a Velodyne SPL-1000R sub in cherry, and together, these speakers are one great package.