The answer to 'PEX pipe vs copper pipe' is that PEX (cross-linked polyethylene) and copper are both popular choices for plumbing pipes, but they have different features, benefits, and use cases. PEX is a flexible, durable plastic pipe that is easier and faster to install, often at a lower cost. Copper is a traditional metal pipe that is more rigid but also more expensive and labor-intensive to install.
PEX is increasingly popular for its ease of installation, resistance to corrosion and freezing, and lower material costs. Copper is still preferred in some applications for its strength, durability, and ability to withstand high temperatures. The best choice depends on factors like the specific plumbing project, local building codes, and the homeowner's budget and preferences.