There is no balm in Gilead. A perfect isoaltion methodology or technique actually doesn’t exist. The negative stiffness, the mag lev, the mass on spring, the air bearing, they all have their Achilles heel (s). And they tend to allow the lowest frequencies up into the thing being isolated. That’s precisely why the LIGO project to detect gravity waves took so long to develop a proper isolation system. But it doesn’t mean you don’t try.