Editorial Methodology

Each company is assessed against the criteria stated in the "How We Ranked" section of the guide. Data points come only from the company's own official website. If an official website does not state a data point, the guide does not present that data point as a fact and the table cell reads "Not stated on official site". Companies are re-checked when the guide is updated. The ranking reflects the stated criteria, not a judgement about the quality of any company's service.

See also the Advertising Disclosure page.