@Chris ***************
, basically, wouldn't be different much.
If you mean when you deal with an immigration officer at passport control upon arrival to Thailand, either would work if you asked. But it's unlikely to be asked unless you have an extensive history of traveling/staying in Thailand.
It's a different story if your air carrier would check your outbound ticket within 60 days or not. You need to talk with your air carrier. Many airlines don't check outbound tickets at check-in if you have a proper visa though.