Traditionally, copper has been seen as the top choice for home plumbing systems. On the other hand, during the past few years, copper has been much to the side and just a bit by cross-linked polyethylene pipes, which are commonly called PEX pipes. Even though copper is still a popular choice in numerous new construction jobs, Pex is quickly becoming a popular choice for renovation and remodeling projects. Both copper and PEX come with several advantages and disadvantages. Therefore, it is important to keep a few key points in mind.