in a nutshell. Too many supplier issues.
I also did some informal testing...and as much as people love the newer cooler stuff. Formica wears like iron. You can set a scalding hot pan on the formica and no issues. E-stone. You have about 15 seconds.
The issue with formica was typically moisture. RV mfg's using T-molding to seal the edge lets water in and it swells (substrate anyway). We went to a formica finished edge and that solves any "cons" caused by moisture.
We used Corian for a while as well...but again. Some supplier issues and weight concerns. So back to ole reliable until we can find something that works without worry.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).