The answer to 'which is better PEX pipe or copper pipe' is that PEX pipe is generally considered the better choice for most residential plumbing applications. PEX (cross-linked polyethylene) pipe offers several advantages over traditional copper pipe, including lower cost, easier installation, and increased flexibility.
PEX pipe is more affordable than copper, with material and labor costs typically 30-50% less. It is also faster and simpler to install, as PEX can be bent around corners without the need for fittings, reducing the time and effort required. Additionally, PEX is less prone to freezing and bursting in cold weather compared to rigid copper pipes.