Tirhni - well I broaden my horizons, and learnt a whole lot more about Hong Kong - Oh I wish I was going!! If you like Singapore you are just gonna luuuuuuuvvvvve Hong Kong!!
Here are some websites with lots of good general/shopping information:-
www.placesinfo.com/hongkong_shopping.html
www.discoverhongkong.com - this is the tourist board site
www.wikipedia.org/wiki/Tourism_in_Hong_Kong
On Wikipedia, if you look on the left, I think the link is 'where to shop' click on there, you will see all the different areas mentioned and what they particularly sell there. It mentions Sheung Wan in the Western District - sounds good fun!!
Am I tempting you to go now?????? :D :D