I'm looking at bear bags/food sacks, and have found a couple I like. However, I'm having a hard time deciding between them. Here are the options: http://www.antigravitygear.com/shop/...ar-bag-system/ Pros: Iincludes OPsack for odor control; 3.8 ozs; slick Spectra line Cons: Silnylon should be waterproof but not as durable as other two; even small critters can eat through silnylon http://www.zpacks.com/accessories/bear_bag.shtml Pros: Lightest at 3 oz; heavier cuben fiber bag provides more protect against critters than silnylon; true waterproof bag with roll top; slick line as well Cons: does not include OPsack or similar for odor control; adding OPsack will increase cost and weight http://www.mountainlaureldesigns.com...products_id=79 Pros: Includes Opsack and cuben fiber, roll-top bag; 3.6 oz Cons: Cuben fiber doesn't appear to be as strong as the Zpacks one There is only a $10 difference in price from lowest to highest. I like the idea of the heavier Zpack material for critter control, and the roll-top on both the Zpack and MLD. Based on your experience, which of the three would you recommend?