Do you personally prefer bottled water or tap water?!

Tap water. Most bottled water is nothing more than "purified" tap water.
My well water is loaded with healthy minerals, and it tastes wonderful...and it's FREE.

More than 25 % of bottle water doesn't come from a spring, instead from a tap. In my opinon, both waters taste the same, however I would choose the one with a cooler temperature. When you leave bottled water outside for a while, the chemicals in the plastic can come into the water and leave a bad taste.

http://www.nrdc.org/water/drinking/qbw.asp

I prefer tap water, but filtered. I can smell the chlorine.