What is the best health insurance option for a British expat in Thailand on a 1-year visa?

A British expat on a 1-year visa in Thailand is seeking recommendations for monthly health insurance policies that provide reliable coverage. Several comments suggest reputable providers like AIA and April Insurance, highlighting their good service and extensive coverage. It's also noted that finding a good insurance agent can be crucial for understanding policy details and navigating claims. Other commenters warn that being in good health doesn't guarantee comprehensive coverage due to the medical history underwriting process.