This is a great question!
To be completely honest, it's the only area of SE Asia that I have any familiarity with.
I used to work in Macau a few times a year, so when I would be there for a week I would go to Familia Nobre for massages, check out a line up, and if I didn't see anything that really caught my eye I would usually head over to Darling 1 at Masters to get more bang for my bucks (pun intended).
I would love to go to other countries (especially if it's better value), but honestly I just have no experience anywhere else (even Hong Kong for that matter).
I really appreciate your reply sir.
-tb