Isolation of what component are you referring to? speakers? clunker amps? If so, do your townsend or whatever.
I was specifically referring to dacs with the linked vid. After trialing everything including things that may have been priced as much as your speakers, yes, i decided at one point that these elastomers were the way to go, if deployed correctly for weight.
These guys did a lot of R&D, huh? Did you see their R&D facilities (a garage maybe? or something bigger) perhaps? test equipment? data? anything?
You can really knock yourself out comparing vibrapods, all the different elastomer pucks, cones of different materials... etc. I have a couple drawers of this stuff. I spend probably hundreds of hours or more doing detailed comparisons over the decades.
A very generalized conclusion I came to is that the very expensive stuff... like Townsend, Silent Running Audio, and Black Diamond work better than cheap stuff. It’s really simple, companies like these that do Research and Development can/must produce products that are very notably superior to someone who simply chooses a substance and makes it into a form. Companies like Townsend and Silent Running have outstanding reputations for a reason. Folks that can afford them hear the difference.
Not exactly young and starving, but, I will always accept donations and free gear from very rich cats like you.
I was young and poor once and worked my way through inexpensive alternatives. Nothing wrong with that.