As a consequence, ladyboys choose to register as a girl and that will create some less pure search results and possibly waste of time for us straight guys.
Some ladyboys purposefully post unclear pictures and don't tell you that they aren't made of the real stuff, so these girlguys will be wasting a lot of your time, what I call noise in the search results that you should filter out as soon as possible.
The benefit of such sites is that they can often afford to invest in a very smooth functionality but being international does have some downsides, especially in that they are less adapted to local circumstances.
An example is that international sites usually don't create a transgender option in the profile registration.
If you ask me, I prefer to stay within the free functionality of a few sites, but that's because 1. because I've found venues and developed ways to make the online dating process work efficiently for me, without loosing too much time.
I'm not so serious (anymore) with Thai girls, 2. (Most Insiders would agree with me that it's not necessary to pay (too much) for online dating sites.) If you don't comply with these four criteria, you could benefit a lot from the paid functionality of dating sites, because it can get you higher in the search, because you'll attract the more serious candidates for a long-term relationship or marriage, because you're not there when they are hot to see you and because some sites give you more assistance, for example even help you to translate messages.
So anyway, here's my best pick of online dating sites in Thailand for all you guys (Premium members: just scroll down, there are some good Thai dating sites and more tricks in the Insider section).