I used to drink a lot of coke but my staple caffeine supply comes in the form of tea nowadays, and there's nothing better for keeping warm in the winter. I wouldn't exactly call myself a tea connoisseur but Earl Grey is my preference. I never really liked green tea. I sometimes drink coffee too - I currently have a tin of that Moccona dark blend.
As you can tell, I'm not really succeeding at reducing my dependency on caffeine... it's a losing battle