I have only been to Thailand and Vietnam so i cant speak for the rest, but base on my experience (if you are not vietnamese) then Thailand is better. However if you speak vietnamese, or travel with a buddy who can speak viet, then Vietnam is your heaven!
You can't beat the price (as cheap as $15 per shot to decent and looking girls ($20 to 30 per shot) or seasonal college girls, models, sugarbabies ($75 to a $$$ per shots). You can check out my guide for Vietnam here:
https://forum.sex141.com/eforum/ ... &extra=page%3D1
I've been to Philippine twice, but for the price and look i prefer Thailand over Philippine.