I have the Competition as well, an I am thinking about getting the back straps. Are they really worth the money? I have never used them.
YES!!! I don't always put both straps on my back unless it is a long walk. Usually I just throw one strap over my right shoulder. The stock strap weighed on my shoulder but the backpack strap doesn't. Don't ask me why. They just feel better. They are adjustable so you can let out/in as much slack as you want according to what is comfortable to you. Anyway, I like em'