I have had a 30+ for over 2 years now and absolutely love it. Not sure about the complaint on the rain fly by Mr. Butlertron above. The rain fly has it's own separate pocket so you should never open that zipper unless you are using the rain fly, and once the rain fly is secure no rain should get into the "rain fly pocket". I have used it in downpours many times and have never had a drop in that pocket. Regarding the straps: yes, it is a little tight pulling the bag over the second arm. I keep mine a little looser than most people and if I have a long walk I tighten the straps a bit and loosen them when I set the bag down. The bottom on mine is starting to wear out so I have added gorilla tape in a few spots. A friend of mine suggested dipping it in or spraying it with truck bed liner, and I am still contemplating this. All-in-all, it is an amazing bag and I will replace it with another prodiscus 30+ when this one falls apart.