@hilde45 I posted an identical question a few months back. I looked at the Townshend and Gaia's. I just didn't want to spend that much $ and I really didn't want to raise my speaks any higher as they are already quite large (Revel Performa3 F208's). But I didn't want to use spikes on my carpet either as I have always had a hard time balancing and then moving them once they're in. So I wanted something that would isolate yet also allow the speaks to be moved/tweaked rather easily without lifting and tearing the carpet. Someone pointed me towards the Herbie's Gliders. They are PERFECT! They give me everything I was looking for at an extremely reasonable cost. They also have multiple models to fit pretty much every speaker out there.
Cone/Spike Decoupling Glider – Herbie's Audio Lab (herbiesaudiolab.com)