Yep, these little guys are the real deal.
I almost opted for the ISO Acoustics stands you seem to notice in every studio pic these days, but went with the mini pucks instead.
I can place my hand on the wood shelf where my monitors are sitting and I feel absolutely zero vibration anymore (as opposed to without the pucks). It's as if the monitors are hanging in mid-air, I'm only hearing what's coming out of them now, the decoupling is very efficient.
If you have small-medium size monitors, I cannot recommend these enough.