my preference is for flathead. my local F&C shop does a pretty good job - nice batter and the chips are treat if i don't have to drive them home with me.
snadra, where are your F&C places of preference?
I have two, but that's more because we haven't tried a lot of places than because we're particularly fussy. That said, everyone tells me that you get the best examples close to the ocean, and I haven't found that to hold true, to be honest.
There's a great place just off the roundabout in the town centre of Windsor (the name of which I can never remember). You can pick up your F&C and duck across the street to eat it in the park, looking over the river.
Our other favourite is The Raw Prawn in Riverstone. They sell fresh fish as well as F&C and I've never had a dud from there, fresh or cooked, unlike the many duds I've had from various incarnations of the Costi's chain. They are also quite careful about labelling where their fish is from. It's a bit of a gem, considering the area! Even better: they manage to make chips that are worth eating.
Do you (or anyone else?) have a Sydney favourite?