Encounter: Duangporn's Haven Bangkok
I actually like Singapore. You pay a little more for girls, but you have a huge variety of them. Not to mention that Singapore is considered the safest city in Asia.
Look up stickman weekly-While he's semi 'retired' and the site is owned by a more commercial guy he covers all the adult fun, food, and life in Bangkok as an NZ Expat. There's a ton of adult guides to the area, you can see rates, services, photos, just about everything in advance excluding the massage girls which are low-key and private vs. the escorts and gogo bars.