I recently got this back pack and i love it. Its large enough to carry everything you need and very comfortable on your back. there is couple of things i really like about this back pack. There is a laptop case built in, there is a hole for an optional camelbak, and there's lots of little pockets to put stuff in. Overall i would recommend this backpack to anyone.
Great clip works every time!
Over all this is by far one of the greatest reservoirs on the market today. Its durable and holds a lot of liquid.
Pros: Durable easy to use, Doesn't cost a lot, Holds plenty of liquid, High flow.
cons: Strait bite valve is a little awkward to use i would recommend getting the "L" shaped one.