Catching his breath alongside a road near Seattle, WA USA
1999 K2 OzM, 2001 Aegis Aro Svelte
I have two models I use. One is the M.U.L.E. which I find to be especially useful for mountain biking as it holds just the right amount of water (100 fl. oz.) and has enough storage for gear for an all-day epic ride without being overly bulky. The other model I have is the Lobo which is more minimalistic and if I take a CamelBak for road riding is the one I choose. It carries 70 fl. oz. of water which is enough to get me by between sporadic water stops and has some space for extra power bars, tools and essentials. I can also roll up a jacket or arm/leg warmers and strap it under the main flap.
I have the Rocket. It is supposedly cycling specific. I like it for the compact design, just what I need... to pack light. Enough to fit in 2.1 litres of water, some energy bars which I don't usually bring, my handphone and a allen key. It is cool really, but the lack of storage space could be frustrating like when I was at the night cycling event.
I to have a rocket. It is the best one I have seen/used for cycling. It is arched so that you dont have weight sitting on your back and it also has a split water resevior so that the water is even across your back.