Osprey Raptor 14 Hydration Pack
This is the big guy. You'll feel like a velociraptor out on the trail with this thing. A very hydrated velociraptor. The Raptor 14 has an added large front zip pocket and stretch mesh pockets. This pack is perfect for long rides on hot days. Unique features include a large front zip pocket, stretch mesh side pockets, and a removable roll-up tool pouch.
Prior to buying an Osprey pack I was using camelbaks. I find the osprey superior in every way. The Raptor 14 holds 3 liters of water and has ample space for additional layers and gear. The helmet carry feature is great too.