I usually eat in the ghetto part of town.
Beef brisket/stomach/intestines in Prince Edwards
Kuen Kee Cafe Company
URL:
http://s.openrice.com/QrKS0tqq000
Add.: G/F 139 Tung Choi Street, Prince Edwards
It is just a typical Chinese cafe, not famous by all means, but the briskets are the best I've eaten.
For Eggette, go to this place
Oddies
URL:
http://s.openrice.com/QrKS0epi700
Add.: G/F, 45 Gough Street, Central
They mix the eggette with ice cream, a bit pricy, but i like the hybrid match.
For roast pork & cha siu, agree Joy Hing's the best if they don't cheat with the scrap meat. Like I said, I eat in the ghetto part, this is my go-to place for roast food
Tai Hing Roasted Meat Restaurant
URL:
http://s.openrice.com/QrKS0NXy000
Add.: G/F, 242 Castle Road,, Cheung Sha Wan
I wouldn't recommend for tourist though because of hygiene issues.
For egg tarts, I only prefer the ones in Lord Stow's Bakery in Macau, the rest are indifferent.
For Dim Sum, I suggest you splurge and go for Tin Lung Heen in 102 floor, Ritz Carlton, International Commercial Centre, TST. you get bird's eye view of HK without and excellent dim sum, worth the money.