I'm in the market for a new photo backpack for around $50-$60. The Tamrac 6 appeals to me, as long as it will fit my Nikon D70s and maybe a couple of lenses and a flash. I also want some extra space to store food and drinks, because I'm going to want to be going on hikes or long walks with it, and I want to be able to keep at least 2 bottles of water. I have a Tamrac Velocity 6X, and it seems to have slightly too little space. Besides the fact that I absolutely despise the velocity because its so uncomfortable and slips around too easily, it can barely hold my D70S with the 18-70mm and a bottle of water. Other lenses are out of the question, and I might want to carry another lens and my nifty fiftey if I buy one. I've been eyeing the Tamrac Adventure 6. It seems pretty good, but I'm wondering if it will be enough space. Should I spend extra and get the Adventure 7? It must be a backpack because I'm going to be doing a lot of biking with it. Is there another good backpack in that price range that you'd reccomend over the Adventure (such as the Lowepro CompuDayPack or the LowePro Rover AWII)?