Re: new umpqua bags
Looks like the 500 chest pack could be a winner. The shoulder straps with mesh back to hold the pack to your chest without wear on the neck. I have a Simms chest pack and it's the most uncomfortable thing to wear. Not that much weight in the pack but as the hours of the day pass, the more and more and more you are aware of the pack pulling on your neck. The Simms chest pack also sticks so far out that you have trouble seeing where you are placing your feet.
If you want a chest pack I would give this model 500 a look. Stay away from the Simms.