For those of us that don't care that much for plain bottled water I have tried some products this past week that I really liked.
Crystal Light singles:
I think these have been in the U.S. for a while but they are relatively new where I am in Canada. Very handy single servings that you can keep in your purse then mix into a standard size bottle of water. So far I have only been able to find the raspberry ice and the tangarine flavours.
Nelson Pure Life flavoured waters:
I got a case of these at Costco. They are made with Splenda so they don't have that strong aftertaste that I associate with Aspartame. Comes in lime, tangerine, strawberry, raspberry and mixed berry.
Dasani flavoured water:
Also made with Splenda - I have only tried the raspberry flavour but it was quite nice.
Both these have 0 calories, 0 fat - just don't overdo it as there is sodium in them. Dasani has about 5mg per 250 ml serving but I am not sure about the Pure Life.