Its much more expensive to get things tailored in Singapore or Malaysia. I usually get stuff done at Bangkok. My tailor Excelsior have done a wonderful job for me for over a decade and i have recommended many people to them and most are happy. You pay 6500 For medium quality wool and its worth the value for having it Slim fit with smaller lapel like those in the GQ magazine. I usually pick 3 to 4 suits each visit i make to Bangkok.
The Tailoring Thread, Bespoke. Nothing beats a perfect fit