I like Fiji (which I still get sometimes, can be had in local grocery stores or Target if I feel like splurging) and Vittel (which I got mainly in Europe although I've had it occasionally in a US airport, I think....)
For general drinking though I'll pick up a Dasani, and I usually have those around at home. It isn't the same as a spring water, but the various spring waters that turn up in the stores have inconsistent taste, sometimes an off taste that others don't care about but I won't like at all. Dasani is consistently okay for me and cheap. Aquafina, Pepsi's competitor product, has had at least sometimes when I drank it a somewhat off taste I didn't like.
After a bike ride or such, any water that's not what has been cooked for a while in my water bottle tastes pretty good.