Case by case. After 1year ed visa, I just came again Thailand by tourist visa. Immigration asked to check bank balance.

I’ll give you some candid advice based on my own experience. There is no single country that is particularly advantageous for obtaining a DTV visa. Vietnam, Laos... it is case-by-case. Some people say it is fast there, but they sometimes request additional documents even for perfectly fine paperwork, and it is unpredictable. The rumors on this forum about receiving a visa within a week... most of them are from agencies. The important thing is perfect document preparation. Most of the people posting here as if they are being treated unfairly... are actually those who haven't prepared the documents that should be standard. For example, when it comes to proving what you will do in Thailand, there are surprisingly many people who talk about their own dreams and fantasies. Also, surprisingly many people don't prepare even the common proof of bank balance. That is why they get rejected or have their applications denied. A country with fast processing? A country where it is easy to get a visa? There is no such thing.