Pneupod NP-1 Pneumatic Isolation Feet - Feedback please


I came across these very unique decouplers (isolation) feet for components. The adjustable air pressure allows components of varying weights to be used without compromise. They are not inexpensive, $325 per foot. 

Please post your feedback based on your experience, thank you! 

https://pneuance.com
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The foot looks very good. Townshend Audio takes a different approach to providing isolation, using a spring inside a bellows-type semi-sealed container. You can see a video demonstrating the Seismic Pod’s effectiveness on You Tube. It sells for around $500 for a set of four.
This approach has been around for quite a while.  Look up Ginko Audio and you will save a good deal of money. You don't get all of the eye candy the pnuemo pods have but I bet you'll get better results. Their "Cloud" platforms are suspended on rubber balls filled with air.
The first pneumatic iso stands were Townshend’s Seismic Sink, Vibraplane, Bright Star’s air bladder stand and the sub-Hertz Nimbus (single airspring) from yours truly, all circa 1996.
I still have a bunch of the Townshend Seismic Sinks, both the original version made in the UK with adjustable feet, and the U.S.-made non-adjustable version. I liked them better than the Bright Star (which I also used to have), they being made of metal rather than the BS's MDF. Having each foot individually adjustable seems like a great idea.
@bdp24,

Thank you for your recommendation. They definitely looks more appealing and cost effective.