Which is the best embassy or consulate for obtaining a DTV visa: Vientiane or KL?

I am looking for an updated post on the DTV experience in KL. I couldn't find one. So, decided to pose a question here.

American passport holder.

Been in Thailand for a few years on an ED visa.

Now I am planning to get DTV via Muay Thai.

I have had that 500,000 THB in my Thai account for more than 3 months.

Which embassy/consulate will be better? Vientiane, Laos, or KL, Malaysia?

Thank you for all your advice in advance.