Border runs aren't a game you want to play anymore. If you are seriously attempting to live long-term in Thailand, that means you will have stuff you will be leaving behind while you attempt to do a run. What happens to your stuff if you get turned away by an IO? The DTV is valid for 5 years and, for 5 years, you don't have to worry about getting turned away when you have to do your reset every 180 days.