Hi there Overclocker,
Thanks for your replies and your recommendations on the dry bags. I did purchase some silnylon bags, they are
Outdoor Research Helium Quick sacks :
I bought the smallest and second-smallest sisez. They seem pretty water resistant. They open and close easily, and they are so light! They appear durable too. I'm sure you will agree they are a good choice too!
As for your comment regarding maneuverability, I think it is valid and the Stratos pack should fit the bill. I'm a little worried the Camelbak BFM some have recommended would be prone to more snags between branches, and make myself less stable on the trail.
Bye!