I'm with the 1-2 a week option. I cant drink instant/filtered coffee, and can only have expresso coffee (snob - LOL). So I used to drink 1-2 cups of tea a day, but after Jenna was born I had to give it all up as she was very intolerant to any caffiene through breastmilk.
Now I'm back to drinking maybe 3-4 cups of tea a week, and maybe 1 coffee a fortnight/month.