I disagree on that.
Back when I ran a lot of apprentices, I'd make a habit of changing the rubber mounts on the apprentice saws every year, because they couldn't hold up to the rough treatment fron newbies who though the best way to deal with a stuck saw, was to just tear it free ( I've had one apprentice rip a 460 in two!!).
The spring mounts take abuse a lot better.
Except for the top one on the 441, they routinely break once a year, metal fatique is my guess. I always keep an extra in the truck, they are easy enough to change in the field.
And I don't think anybody will argue against the spings being better at vibration dampening?