My audiophile friend Daryl says we don't know what we're missing until we try these. They're about $315 for a set of 3 with a money-back guarantee. He's had Stillpoints, Herbie's, BDR, AmCan and a few other isolators. He further says "these are the only ones that don't color the sound, but just remove noise." He goes on to say "Improves sound in virtually every area: more detail, airier, sweeter highs, clear deep soundstage, much deeper tighter bass...". "Fanatical precision and quality."
What's not to like? If you are so inclined, give them a try! Worst case you return them and best case is that you have an amazing isolator for a critical component of your system.