Thanks for the link. I seem to remember seeing something similar (the non-lip
version) some time ago, or it may be QuietWalk or another brand. I didn't pay too much attention at the time because I thought underlay is generic (i.e. non-branded).
If I remembered correctly, the fiber pad (SolidWalk/QuietWalk look-alike) costs twice as much as the Harmony. Interestingly, the Harmony is actually similar or better in terms of IIC/STC rating (possibly in biased control environment):
I wonder what the competition has to say about this:
In Europe, where floating floors have a much longer history, a similar product to Quiet Walk was common some 20 years ago. Today you will not find any in use. It was found that after 10-15 years, when the floors were taken up, the material had disintegrated to the point that only dust remained.
It's pretty bold to imply a competing product will disintegrate into dust over time.
Having said that I'm tempted to get Harmony.