What's a good alternative for soda?

Here's my issue. I take a Coke or a Mountain Dew every day to work. I know the stuff is terrible for me, so I'd like to find an alternative to soda. I don't feel like drinking water with lunch and I don't like Ice Tea. Does anyone know a good alternative to soda, something a lot healthier? I tried Naked Juice and didn't like it either. Any help would be appreciated. Thanks