This document provides guidance on choosing a reliable Magento development partner. It recommends checking if developers track bugs, use Agile techniques, source control, continuous integration, unit testing, documentation, internal wikis, source code agreements, attend conferences, read programming books, comment code well, and have good references. Quality, price and time form a triangle where you can only optimize two. Magento projects are more sophisticated than average PHP projects due to Magento's features and large ecosystem. Quality is measured by experience and development maturity. Specialization in areas like payments, shipping, products, and checkout is important. Coding standards and experience with extensions and templates should also be checked.