Both Copper L and PEX-A are excellent, high-quality materials, and the best choice often depends on your priorities and budget. Copper L offers a decades-long proven history of durability and is naturally biostatic, which helps keep water clean. PEX-A provides superior flexibility, allowing for a faster, less invasive installation with fewer fittings. It's also resistant to bursting from freezing and is typically more cost-effective. We can help you weigh the pros and cons during your consultation.