my 3-yr-old had tried many different brands of milk while we were in HK. they seemed to be pretty much the same to me. i just bought whatever has the latest expiration date as long as it's whole milk, coz my son doesn't like the taste of low-fat milk.
but then, i realized that most cow milk from the cartons in HK don't have the vitamin A & D added as those in here.
however, when we were in Macau, i realized that only the Kowloon Dairy (Golden) has the vitamins A & D. The regular Kowloon Diary milk doesn't have those. since then, I bought the 維記金裝鮮奶 for my son.