For me these days it's Kilkenney.... a rich and dark Irish brew made from the original recipe of the Kilkenney Abbey monks.
A Worthingtons or Boddingtons isn't bad if Kilkenney's not available... or a Whitbread Tankard, not that I've seen any in a while.
After that it is either Tooheys Old or Tooheys New..... sometimes a XXXX if the price is right.
As for Fosters, that's swamp piss with the slime skimmed off the top... wouldn't put it near my mouth, much less in it.
And VB [alternatively known as Venereal Brew], well that isn't fit to serve as pig swill.... wouldn't have it in the house, much less taking up room in the fridge.
Coopers of any variety is good, but most often it's hard to find up here in QLD, or it costs way more due to shipping, etc.... though I will grab some if I'm buying and see it on special. Strangely enough, Coopers costs more up here than most imported British beers... go figure.