Seeing we are mentioning Bangkok - I will give a shout out to Saville Row (at the Rose Hotel) run by Aaron. They've been in the biz for decades, and are favourites of secret service types (can tailor a jacket to conceal a holster very well). I've bought several suits from them. Oldest is about 15 years old and still quite gorgeous and holding together perfectly. I have all my business shirts made there for about $30 a pop. They are made to my own design and they keep patterns and measurements on file so that they can remake perfectly. I'd suggest an initial fitting in person of course. They do regular tours through the US / Europe / Australia etc where they can measure you up. My wife also got her bridal dress made through them and it was absolutely stunning.