I was looking at either the Dakine Sequence or Burton Zoom, when I remembered it's been ~5 years or so since i've been on a wildlife/hiking/snowbound photography trip. Most of my stuff now is urban, or travelling by car. Not much 'roughing it' these days... So now i'm looking for something that meets the following criteria: camera equipment I plan to carry: 1 Nikon D80 1 18-70mm lens 1 50mm 1.8 lens 1 70-300mm lens assortment of extra batteries, sd cards, filters, etc. I would also like it to be a bit shock resistant, provide easy access, and be comfortable to walk 20 city blocks with. I had a messenger bag type, and I hated walking with it. The strain on my shoulders was terrible. I was looking at the sling bags, but am not sure if they're any better... Ideas?