SRA Silent Running Audio vs Critical Mass System


I want to know if somebody ever had the chance to compare those two isolation devices specially under amplifier (Lamm as exemple)?
Both are expensive SRA is 850$ for each amp and CMS is 1800$ for each amp and i am talking of the basic line ...
CMS seem to be a new player who replace SRA as a partner with Lamm Industries.
Also the technological approach seem to be different ?
So is this worth the money for a 15% of sonic gain???
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I just listened to a pair of Atma-sphere MA-1's on SRA VR3.0 stands and was amazed at the difference they made. Although it is hard to equate the improvements in terms of percentages, I would say it is well above a 15%gain.
Rhythmace, true, true...it all gets more "quiet" doesn't it and lets the music get through much less impeded by tiny artifacts, foreign to music per se.
Detlof, it is amazing how we as audiophiles become accustomed to those artifacts that don't belong, however until something comes along that greatly diminishes them i.e SRA stands, we don't realize the full extent of how detrimental they really are. I'll be buying a pair for my Atma-sphere's.