I'm looking for a waist pack that has two 10 - 12 oz. bottles for shorter runs. I like to drink Nuun, but Buddy won't touch it, so I need another bottle for plain water. Some of the choices I'm considering are the Fuel Belt H20 model, the Amphipod Run Lite Trail Runner (scroll down page to see it) and the Nathan Speed 2. It would be nice if the pack had a small pocket or pouch for keys and cell phone. If you've had experience with any of these, please leave a comment regarding fit, if the bottles leak, if you can add bottles if needed, pros/cons, etc. Thanks!