I only drink bottled water. Hell, I just about drink only water period! Tap water tastes nasty, and even smells like chlorine! (at least where I'm at) You can seriously smell it when you turn on the tap.
I'm not really picky about the specific brand of water it is I'm drinking, and usually go by what's on sale, but I seem to favor Poland Spring out of all the brands of water.
The only time I will drink tap water is if it's been through one of those filters. Where I live on campus, we keep a Brita water pitcher filter in the fridge, and it's so convenient, and a lot cheaper than constantly buying cases of bottled water. The filtered water from it tastes just fine.