Vietnamese food - omg that is no contest. Sigh. Westminister/Santa Ana/etc in SoCal is real good for Vietnamese food too. Why can't HK get the Vietnamese food right? They're so much closer to Vietname too. Oh well. I know what you are talking about for cheap HK food. Some of the food is so salted or sauced but I could still taste the weirdness. Thanks to raising rents and rich landlords.
Crystal Jade is a good choice. In other words, stick to shopping malls lol.