This is something I wonder about too. I know a lot of people say they use local water fountains or stick water in their mailbox or a friend/relative's front yard. Unfortunately, I live in an apt (so no real mailbox) and since I live just off a very busy road, I can't safely make a loop past the apt, it's merely my start and finish. We also don't live remotely close to family (they're states away!) or even co-workers. Basically all that is to say that if I want water on a run, I need to carry it. I'm at the 4 mile (45 min) point in my training now, and at this point I start to get thirsty on hot/humid runs. I definitely need to start bringing water with me soon. I don't need as much water as a Camelbak holds, but I feel like those would be the most comfortable option.
What are some pros/cons with the hand helds, bottle belts, and packs?