I too tried the Herbie's decoupling gliders, and preferred my previous spikes better. The Herbie's softened the mid range and high end to an extent I didn't care for. I now own the Isoacoustics Gaia I, and couldn't be more pleased - pricey, but well worth it.
Isoacoustics Gaia II on what type of speaker platform?
I'm interested in the Isoacoustics gaia footers for my speakers. The room is on a suspended wood floor with carpet. The carpet is too thick to use the optional carpet cups. Any experience using a granite or maple platform in this situation and then having the footers sit on the granite or maple platforms? Positives / negatives?