@hippotamus Sorry - maybe I wasn't clear. I agree totally that there are plenty of good or better tailors in HK, and that sifting them from the general rubbish peddled by touts in TST is a very big step.
I've been living in HK since April - I've had one suit made at Y William Yu (7/10), a linen jacket from Practical Tailors (7.5/10), two "linen" shirts made at Jantzen (7/10 for the one that was actually linen, 5/10 for the one that was made of cotton) and eight shirts at Graly (8.5/10).
The lesson I've learnt - that HK tailors will do what you tell them to do and not do what you don't tell them to do. Saville Row cutters, the SR diaspora such as Tom Mahon or Steed and of course the galaxy of high-end Fiorentine and Neapolitan tailors will guide you along your journey, suggesting and recommending what they think will work for you.
I think that three things work against advising a Hong Kong suit for a young man with a standard body type:
1. Prices have risen steeply in Hong Kong, as input costs such as fabric, rent and labour have shot up and up.
2. Online shopping has made it possible to order a RTW suit from a large company such as Suitsupply that can buy good cloth and manufacture in bulk, and pass those savings on to the customer. These companies have generous return policies so if you don't like it - back it goes. A young guy who doesn't have too much experience of smart clothes should take time to see what he likes, and facing a HK salesman means he's more likely to make a costly mistake.
3. Modern workers now seem to spend very little time wearing suit jackets, even going to and from work. Perhaps if there's a client meeting coming up but in London and now in HK it's very much open neck shirts and suit trousers to and from work, perhaps with a warm overcoat in the winter. It's the trousers that take a beating, having coffee spilt on them or falling over drunk on a night out. A well-fitting RTW suit jacket with two or three pairs of trousers to match will probably see our young hero through the next year or two and his money is better spent on that than going to a mid-range HK tailor for one jacket and one pair of trousers for the same money.