Juice is good for you, but it isn't low calorie. And some juices are better than others... you see white grape juice in a lot of blended juices because it is very sweet and has few nutrients. Natural sugar water. Apple juice is often used in the same way. Orange juice doesn't, and is not *so* bad for you.

Water with a bit of lemon or ginger can be nice. Teas can taste very different... a lot of folks like green teas even if they don't like black tea. (me, I like black...) There are also herb teas, like mint and chamomile. Try a few different things to see if something works.