In all of those sorts of products, the quality and experience of your local contractor tends to be at least as important as the surface material selected -- all are very dependent on the skill and integrity of the contractor. Even if DiamondBrite is a superior product (and I don't know that!), it would be better to have plaster with a good contractor, then DiamondBrite with a poor one.

But, for obvious reasons, local evaluations have to be made locally, not here.

Sorry.