For me, it depends on why I'm thirsty. If the thirst is from eating red meat, or savory foods, especially with salt, then ice-cold milk does it for me. I also get very thirsty for milk after eating a rich desert. But that may be a cleansing of the sweetness from the pallate and throat.
If it's a hot day, or strenuous activity that brought about the thirst, then ice-cold water, with a bit of lemon peel does the trick. Pop (soda for the rest of the country, except the dep South where all soft-drinks are called Coke) just makes me more thirsty.
Once, and only once, an ice-cold beer hit the spot, when I was 18 and clearing land of tag-alders and their stumps one hot, summer day. But that was before I decided that I could no longer stand the flavor of alcohol, nor the hang-overs
, and quit drinking for good.
Once in a great while, I get a hankering for Mountain Due, diet of course. And a Squirt will occasionally cross my lips as well.
As for fruit juices, nothing says satisfaction like grapefruit juice for me.
Seeeeeeya; Goodweed of the North