I posted elsewhere on the forum today that I am totally impressed with the SQ improvement with the GAIA III's under my Spatial Audio speakers for the reasons described above. It is a pricey tweek ($684 with the carpet spikes), but it is a really significant improvement in the SQ of my system. No question about it.
Isoacoustics Gaia Speaker Footers
Replacing the spikes in my Soundocity outriggers (Soundocity made me a set of outriggers with threaded holes) with the Isoacoustics Gaia 2 footers has improved the sound of my Merlin VSM speakers. They now sound more open and articulate than with any combination of Z-feet or other spikes, with or without outriggers, on the floor or on a platform, that I've tried. Like the Townshend products the Gaia footers completely decouple the speakers from the floor, allowing them to float. See:
http://www.audiostream.com/content/isoacoustics-gaia-isolation-pucks#IVXH8EtVAjQdwbuj.97
http://www.isoacoustics.com/products/gaia-series/gaia-i/
http://www.audiostream.com/content/isoacoustics-gaia-isolation-pucks#IVXH8EtVAjQdwbuj.97
http://www.isoacoustics.com/products/gaia-series/gaia-i/