Personally, I tend to favor one type of bottled water over another, and often avoiding those I don't like to the point I will go without. And, I don't do carbonated beverages at all.

Here's a cute video about those 'bottled water snobs'.

*Sorry I couldn't paste the video here, so you'll have to follow the link above. If anyone can help, I was able to post it as a blog at myspace, but I could not find the embedding code.