I have a weekend cabin in the mountains of So. CA. I have a problem with pipes freezing in the winter, even when the cabin is heated and occupied. The cabin needs new plumbing anyway and I was wondering if PEX would be a suitable product to use. I will be taking additional steps to eliminate the freezing pipe problems, but I saw in an advertisement that due to its flexible nature, PEX was a better product than copper pipe in these situations. Your thoughts?