The answer to 'best sewer repair' is to hire a professional plumbing contractor. Sewer line repairs can be complex and often require specialized equipment and expertise. A professional plumber will be able to accurately diagnose the problem, provide the best repair solution, and ensure the work is done safely and to code.
Attempting DIY sewer repairs can be risky and lead to further damage if not done properly. Sewer lines are buried underground and can be difficult to access, and improper repairs can cause leaks, backups, and other issues that may be more costly to fix in the long run. It's generally best to leave sewer line repairs to the professionals.