Astro, I see things differently than you in this way: I chose to discuss the subject of this posting from a theoretical point of view, addressing the "why" of isolation. You prefer a statement of how a certain approach or product had what kind of affect on a commenters own system. What lead me to try roller bearings was Barry Diament’s discussion of isolation on his website, not a statement by him about how bearings affected his system.
When I read about the theory behind an approach or product, I decide to either give it a try, or not, based on my own personal "sniff" test. Reading someone else say how a product did this or that to their system in florid audiophile terms doesn’t necessarily mean much to me.
I mentioned air bearings because I have Townshend Audio Seismic Sink platforms (the original "air" version, not the current "spring" version) under my turntable, CD/SACD player, tube phono pre-amp, tube line-stage pre-amp, and tube power amp. I mentioned roller bearings because I have both Symposium Acoustics and Ingress Engineering bearings under same. Yes, I recommend anyone looking for good isolation consider looking into these products. I wouldn’t dream of describing how they affected the sound of my system, but by discussing isolation itself I attempted to say why they might be of benefit in someone else’s.
