Has anyone used Watts Heatway PEX before? I'm deciding if I should go with the local supplier, selling the Watts brand for $.48/foot, or go the Internet route. I can find Mr. PEX (PEX-al-PEX) for $.43 a foot shipped. I'm a homeowner doing a rebuild, and I'll be installing the tubing. I also cheap, so I want the best price for a good product. How about ThermaPEX sold by pexsupply.com. Their price, at under $.39 seems to good to be true.