Here is my experience.
I used the Isoacoustics Orea Bordeaux and Indigo and did not make much difference if any at all. Now, if you really want to isolate use the Seismic Isolation Pods from Townshend. IMHO way better by a long shot. I did a simple the test the Pods, Orea and no Isolation. I have an unipivot tonearm in one of my tables. I put the table on top of the Orea, played a record, then I tapped the shelf with 20gr pendulum, the sub extended 1.23 inches, then I put the table on top of the pods and repeated the the experiment, and the sub extended 0.21 inches, without isolation the sub extended 1.24 inches. The reason I did use this method was an attempt to take all the subjectivity out of the equation. Yes the Pods are more expensive, but they work. I repeated the test 4 times and these are the averages. The Nobsound pucks did a much better job than the Isoacoustics too, the only "problem" with the Nobsound is that you need to figure out how many pucks and springs, but once you dial it in, then they land at 0.86 of an inch of extension.
I used laser range traces to measure the extentisions.
