I have to keep my urinary pH above 6.4 to keep a medical condition at bay. And when I was testing waters, Chrystal Geyser was one of the best. I like the way it tastes too. And I'm like you, I spend a lot of time in my car and need to drink bottled water. But recently I've been buying Arrowhead at Costco and it's not too bad pH wise, but not as good as the CG.
When I first found out about the pH connection, I bought a really expensive water purifier that's supposed to not only clean the water, but bring up the pH. When I lived at my last house, it worked fine. I loved it. But since I moved and changed water districts, the water here tastes awful, even through my water purifier. I even went and bought a new filter, but it didn't help. The quality of tap water is so dependent on the people who clean the water. And I only live 15 miles from where I did, and the water is just crap.