Should my onward travel for a Thai Tourist Visa be within 60 or 90 days?

When applying for a Thai Tourist Visa, there is uncertainty about whether the onward travel ticket needs to be within 60 days or 90 days, especially considering the option of a visa extension. Various comments suggest that while some consulates may accept reservations for up to 90 days, it may be safer to have a ticket showing departure within 60 days due to potential scrutiny by immigration officials. It's also mentioned that one can reserve a flight ticket for a fee, which can be a practical solution for satisfying consulate requirements.