Stillpoints Ultra 5

geoffkait,

Yes; I agree.

nkonor

A shout out to Mike at Ingress Engineering.  I purchased his "rollerblocks" for my pre amp, and mono block Herron amps.  Similar to Symposium but a little smaller.  A good value cost wise and they made an improvement between a cable and equipment change. They opened up the soundstage and defined the instruments more precisely and tightened up the base. 

Will the IsoAcoustics Gaia resist the MM3’s weight (575lb/each)?

I use relatively inexpensive Vibrapods under my speakers and they work very well to decouple them from my wood floors. Cheapskate solution? Indeed.

Wolf, you must be kidding us. Under speakers you want either spikes or something that absorbs energy very well. That rubber is neither.
I use both Polycrystal spikes and Boston Audio tuneblocks for speakers with excellent results. Never tried anything else except stock spikes, that were junk.