I may be misreading this, but Onyx is not plastic.There is absolutely nothing wrong with products made of those materials. Because I work with both a lot IMO...and it's only MO.....you cannot beat the look of stone or tile. They are two different animals. As for the grout....if the installer seals the grout before first use....and the user seals it every 2-3 years or whenever necessary(takes 30 minutes) cleaning is no more a job than a plastic surround and it will last forever.
Edit: Upon further investigation, Onyx is a combination of acrylics, polyester fibers, and resin, and is considered a type of plastic. I was envisioning those cheap-ass tub surrounds that are all white & flexible. Onyx is really solid.
Edit: Now I'm finding info that says it's something else. Oh, what the hell do I know?
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