I also came across Prince last year and let them make a few suits. When I waited for an already orderd Cashmere suit I found out that they offer even better material (they wanted to sell another one and I didn't like any material).

Anyway, I ordered another suit made from extremely good material which is actually one of my best liked suits until today. But although I like their material, their handcraft is about average. Even after hard negotiations prices are a bit high for their skills (good sales, simple manufacturing).

I tend to think there are better places to go. Be sure to find a place in which they don't offer just "one free fitting" but two to four. But sorry, I don't know a place of such high quality in SIN. However, before going to Orchard Towers (there are hundrets of tailors trying to squeeze you), try to ask locals for a serious tailor.

Good luck!