I think I paid $170 for my Osprey Aether 70 a few years ago. it works great when I have to be the pack mule for my family and would likely hold the large volumn, heavy weight gear it sounds like you have. When I go alone or with just one kid, I am currently using a Granite Gear Vapor Trail instead of the Osprey.
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If I wouldn't eat it at home, why would I want to eat it on the trail?