The answer to 'best pipe' is that the best pipe for a home plumbing system depends on several factors, including the type of application, local building codes, and the specific needs of the homeowner. The most common types of pipes used in residential plumbing are copper, PVC (polyvinyl chloride), and PEX (cross-linked polyethylene).
Copper pipes are durable, corrosion-resistant, and have a long lifespan, typically lasting 50-70 years. They are often used for hot and cold water supply lines, as well as for gas lines. PVC pipes are a more affordable option and are commonly used for drain, waste, and vent (DWV) systems. PEX pipes are a flexible, plastic-based material that is becoming increasingly popular for water supply lines due to their ease of installation and resistance to freezing.