My personal tip, if you want a really classy original three piece suit, is to track down Nickermann's Boutique & Thai Silk at the Landmark Hotel and Plaza on Sukhumvit Road. There you can get a top draw three piece for something between 7000-10000 baht (£220-£400). It has an established clientele of diplomats from all over the world, particularly Germans and the ever stylish Brits, which shows you that you can trust in its quality. Bare in mind that a made to measure suit can take up to a week to make, and that buying from Nickermann's website is not a good idea at all. Look at me, I've gone all Gok Wan on you.