Matt, initially when I came to Bangkok I had the same idea as you. I wanted to hop around a bit and check things out. That didn't really end up happening because I went to Master Toddy's first and never left lol. Nor do I plan on leaving. I think it is hugely important to find a gym that matches your goals and style of training. Part of what I love here (and Tu mentioned), we are very diverse. There is always someone here who's goals will line up with yours. Someone to push you that extra mile if you need it, or work on something particular that you are struggling with. Speaking a similar language is also hugely helpful. Even if you are totally lost with what the trainers are saying, there is always someone who has been here a bit who can help try to translate a bit. I can't imagine where I would be skill wise if I was just doing the same drills endlessly while trying to figure out if I needed to correct something or not. Might as well train yourself at that point lol.
If nothing else, I'd recommend coming by just to watch training soon after you fly in (you'll be jet lagged and wanting to just chill out a bit anyways). I've been here seven months and made tons of new friends from people coming to train weeks at a time. All of them have said they want to come back :D