Rubber vs. Polyurethane

[crv]

I've searched and know this has been brought up a few times. Looking for a little additional info on this as well as maybe results over the years as a lot of the threads were quite old. A lot of guys should have some miles on both by now.

Wondering if polyurethane body mounts are some of my problems as of late...I've seen multiple people mention that they are super stiff, smaller than rubber mounts so require more shimming, etc.

Also, my Blazer is going to be on the sand dunes for the majority of its use...which would benefit me more?

Thanks!