HK is fantastic racing, particularly Sha Tin as opposed to the midweek Happy Valley.
Hutchies Honkers site is a very good resource and worth paying on a meeting by meeting basis.
Joao Moreria, Zac Purton and Karis Teetan are the top hoops, but there are other excellent Aussie Jocks as well. Joao is astonishing and to my eye rarely rides a bad race, he has the uncanny knack of being in the right place, he rides at all weights from 52kg upwards.
There is so much in the pools, I was there on HK Derby day and there was 20m NZD per race in each pool, but the lack of co mingling for trifectas means that there are tiny NZ pools and better to bet off shore.