Late, as always- but I will offer my experience with maple stands, that echoes Thorman's.
No matter what combination of maple stands, mapleshade cones, and various elastic materials I used, the results were pretty much the same- dullness, smearing, loss of dertails and dynamics.
I've also had a few conversatons with some designers/ manufacturers of the support systems, who basically confirmed my empirical findings.
All had changed, when I switched to Sistrum platforms- without going into much detail, very significant improvements across the whole spectrum of audiophile virtues.
To oversimplify this approach- speakers need to be on a kind of support system, that can drain vibrations away from the speaker, and not to "isolate" speaker from external vibrations.