IsoAcoustics GAIA footers: impressions

I have Spatial Audio M4TM speakers which were spiked to the thick carpet in my room.  I got the GAIA footers with the carpet spikes this week and got them installed today.  They are fiddly as hell to install, requiring a narrow needle-nose pliers to cinch down the nuts securely. 

I have been listing to my system for a few hours with them installed and from the get-go, the SQ improvement was readily apparent. There is an enhanced vividness to the music with more pronounced leading edges to musical notes and a more life-like decay to the notes that makes the sound more engaging.  I am very impressed with the SQ improvement which is far from subtle to my ears.  I previously auditioned the SVS footers and they clearly degraded the sound of my system. 

These footers have garnered lots of praise in the audio community and at $680 for them, it was an expensive tweek, but my ears are really happy with revisiting familiar recordings and loving the sound ever more than before.  I am aware in reading reviews that a fair number of folks trying them were not impressed, but Music Direct and others permit a 30-day money-back trial if they don't work in your system.  At any rate, it seems appropriate to share my impressions of them with you folks as they are quite amazing in my system.