I'm visiting Singapore for the first time in a few weeks and have heard that it's a good place to buy watches below standard retail price. For my next purchase, my lead candidate is a Vacheron Constantin Dual Time Regulator, but I'm also looking at models by Ulysse Nardin, IWC, and Patek. Does anyone have a strong recommendation for a reputable dealer in Singapore who carries one or more of these brands and who sells for substantially below prices available in the States or Europe? If prices aren't substantially less, then I won't bother. Note that I haven't concluded whether or not I will insist on buying from an authorized dealer. Thanks.