What is a good agency for obtaining a Destination Thailand Visa (DTV) and what are the conversion options to other visas?

The conversation revolves around seeking recommendations for agencies that assist in obtaining a Destination Thailand Visa (DTV). Users discuss the complexities of converting from a DTV to other visa types like the Non-O and LTR (Long-Term Resident) visa. Points include the requirements for applying for these visas while still holding a DTV, the need for a bank account, and the procedural nuances involved in transitioning between different visa types. The importance of having a medical certificate and the smoothness of the process when working with the Board of Investment (BOI) are also emphasized.