I had a neo angle shower installed 4 years ago. It has leaked for four years. I am having it redone. Because of the small area and slanted ceiling I need to go with tile. The problem comes with the base. What will be the best: Swanstone (which I read on this website stains), Acryic, or Terrazo. Is there another option. I want something that doesn't stain and is easy to clean and won't leak. I hope that is not too much to ask. Any advice on putting in the shower as a whole?