My tile setter told me that he will be using something called Prism grout rather than Epoxy grout. I have been hearing that Epoxy is the best grout out there when it comes to staining etc.

The grout lines in my 20 year old tile floors have become very dark from staining and I do not want that to happen in my newly remodeled bathroom.

We will be using marble tile on the shower walls, the back splash and bathroom walls and as well as the floor.

Will the Prism grout be as good as the Epoxy? He mentioned that the Epoxy is very hard to work with.

Help please!