'Go with Camel Back. It's been proven to work for years. Eliminate the sloshing sound by removing all the air in the bladder by inverting and sucking the air out of the tube, push the water to force the air out, or fill to physical capacity. Never cut a slit to open any rubber drinking port. Grasp the drinking port between your thumb and index finger, squeeze and roll back and forth until the slit that the company precut opens and exposes. Do not go with Hydrastorm hydration systems! They leak at the bladder-tube connection (threaded connection). Uncomfortable when water leaks into the small of your back and mid waist line, especially during a long march/hike.
V/R.
I would guess it depends on how you use it.
I have a four bottle fuel belt with the pocket like the one lilmiss describes above - I only use it on long runs. I like the option of using two waters and two Gatorades - it's also easy to refill at a water fountain along the way. Some people I run with have the single bottle on a belt - they like that one because the bottle is in the small of your back and is out of the way. I have hiked with a Camelback and don't like how sweaty it makes my back - it's kinda cumbersome for me.
My running partner and I use Amphipod. Holds 20 ounces. We find for long (14 miles+) we could use a bit more but it is very comfortable and has a pouch for keys, gels, etc.
the wide mouth bottle allows me to add ice cubes which is a plus in hot weather.
My selection after reviewing all available options was to go with the Camelbak Catalyst (28 oz.). I am currently training for the Detroit-Windsor Half Marathon and find it nice on those +8k runs. I actually just returned from a run with this pack and was quenched the entire time. You will not even notice the pack as it is tucked neatly in the small of your back. This pack does have two semi-pouches, however they are velcro pouches and I'd rather keep my key in the all but air tight zipper pocket of my running shorts. One more thing, this pack also has a large mouth to allow for ice cubes. If you are interested visit www.camelbak.com or order your pack of ebay as I did.
In any case good luck with the search and keep on running,
I've been trying to design a comfortable water bottle (called The Body Bottle - www.bodybottle.com) that straps to the arm. The latest version straps to the arm and rips off with velcro. I use it on runs longer than 5 miles or if it is really sweltering outside. Of course I find it more comfortable and less restrictive than everything else out there.
Let me know if you have any Qs.
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