Turntable isolation platform Recommendations?


I currently have a Critical Mass isolation platform on loan. Does anyone have any other suggestions I might look at?  Possibly considering the HRS 

any feedback would be greatly appreciated..

iconicaudio
Looking into Townshend right now but this distributer in California is not very responsive.
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@iconicaudio: Townshend’s U.S.A. distributor is not only not very responsive, he doesn’t seem to know much about the Seismic products, or exhibit any interest in promoting them. After speaking with him a few times, I first looked at buying from one of Townshend’s UK dealers, then discovered that John Hannant was selling directly to U.S.A. customers. Great advice and recommendations from John, not to mention prices. Excellent packing and shipping too.
There is a basic and central question to vibration control devices.
Springs vs Solid
Specifically let’s look at the Townshend products vs the SRA.
I do not question the validity or efficacy of Townshend but question if the SRA solid isolation is better? It certainly seems very different.