Nice choice, Osprey makes top notch equipment. One big compartment is much more practical, you can pack all the heavy items closer to your spine, & don't get that feeling that someone is tugging you backward.

The sleeker design of the Osprey over the Fiamma really makes a difference in maneuverability. Definitely not much to snag on, and no bulging pockets make it easy to squeeze between trees and deadfalls. Much more durable material than the Advent!

I agree that the Advent has a bunch of goofy straps. I cut off a couple & removed the bungie cords. I actually prefer the top-loaders, but didn't see the G-Pack until after this was purchased. It has quite a few less straps on it.

Here's a nice product for your new pack, Silnylon Dry Bags.
http://seatosummit.com/products/display/7
Quebec Dealers:
http://seatosummit.com/findstores.php?st=QC
They beat the heck out of double-bagging everything. A 4-liter bag is big enough to hold my 1st-Aid Kit, Camera, Electronics, etc.. everything that must stay dry. I think I cut 1/2 lb. of baggies out of my pack with these. <img src="/images/graemlins/cool.gif" alt="" />