Thai Cupid has the better functionality by a good margin, while Thai Friendly is a pretty basic site.
Thai Friendly has a separate ‘Ladyboy’ gender choice, which means you don’t have to worry as much about running into these on the site (unless you want to), while Thai Cupid doesn’t.
They won’t bill you for more than you choose and your money is perfectly safe.
The site is operated by the Australian company Cupid Media, which is one of the largest dating service companies in the world with a very good reputation.
Of course, an older guy can do very well on Thai Friendly and a younger guy can do just as well on the other.
If you’re looking for a serious relationship and maybe even eventually a wife, then I would recommend Thai Cupid and if you are primarily looking for a bit of fun and willing to work for it, then Thai Friendly is the best choice. Both sites have a lot of girls who are each unique and with their own motivations, so whatever your situations, both sites are good choices.
If you are in shape (for your age), don’t be afraid to show it with a picture of you at the beach or doing something active with your t-shirt off.