Whatevers cheap and/or has high alcohol content.
Double blacks are pretty good, I'm not much of a fan of pre-mixed 'cola' (syrup and soda water) so I like them. Of course I'll still drink bundy & coke, or slate & coke, and I type that as I have another bundy.
I can get a lot of alcohol cheap through work now, I got some Remy Martin Cognac last week on the advise of 50 Dr Dre songs, and it is quite smooth.
Original green Chartreuse is a good drink too, 60%-odd and it goes down pretty smooth.
Agreed with above, Johnnie Walker Blue Label is expensive because of the case it's in. There is a lot better for the money.
There are some good beers around nowdays. Barefoot Radler's go down really smooth after work, as do Tooheys Extra Dry Platinum.
Above all that though, I'll always go back to good old Coopers Pale Ale
