Love to hear from current owners or past users of Isoacoustics Gaia footers.

Which footers did you replace? Your provided spikes? Thanks. 

I was thinking about getting the Gaia II, but the cost is 600.00 plus I would need the spike cups at an extra 140.00.  It also looks like the spike cups aren’t long enough to use on my thick wall to wall carpeting.  Last thing I want are my 115 pound speakers sitting on top of the carpet.  

I replaced the stock footers. I have Stillpoints under the rest of my components. The GAIA's improved bass articulation and allows the speakers to disappear better. It's not a night and day difference. You have to hear them in your own system to determine if they're worth it to you. In my system I submit the GAIA's are a much better value than Stillpoints when I consider packaging and positive impact on sound.

I went from Mapleshade Brass Heavyfeet to the Gaia I's and heard a definite improvement. I added Sound o city outriggers threaded for the Gaia I's and that didn't improve the sound much but made the speakers more stable. The Gaia's are quite expensive but well worth it to me for the sound improvement they made in my system. 

I have them on some large floor standers, but I was kinda throwing the kitchen sink at "Last System.."  I don't have anything bad to say about them, but I've noticed some of the A/B tests seem to leave the non-Gaia speaker slightly lower than the speaker with the Gaia feet and suspect a slightly higher speaker will sound different to a seated listener.  Also, if you have a bass port near the floor, then you'll get a different (less bloom?) bass.if the port is off the floor.

They claim to restrict side-to-side cabinet movement but allow front to back movement.  If so, I could see the front to back movement creating a cleaner, less thumpy sound, but not necessarily objectively better.

They do look nice compared to spikes, and I have no intent to sound snarky.  They're still in place, and I love my system, which says something.