I have spent a few thousand dollars (US) with HK in the last couple years. This was spread over 40 or so orders and I have never had an issue with the HK side of the equation. They have taken a day or so to get the paperwork and product to the shipping area, but most Asian companies are not much better.

With that being said, the Hong Kong Postal Service leaves something to be desired. It has taken them up to a week to get my order off the "island", but it has always arrived within four weeks of my ordering. Some of that wait time has been waiting for customs to clear my package.