bveitch wrote a review of Gregory Z 55 Backpack - 3050-3660cu in on July 2, 2009
I haven't logged too many miles with this guy yet, but so far it's more than what I expected. When looking for a new pack I did a lot of research and tried on several packs. I can't believe how well the ventilation and padding worked. I'm usually somewhat sore after a backpacking trip, but my shoulders felt nothing after my most recent trip. It handled very well in some rough terrain and all of my gear stayed in place. You can pack this backpack very well too. It has several straps to tighten it down similar to a stuff sack. I think this is really helpful for the weight distribution. Bottom line is that it's loaded with a lot of features and for light backpacking, I doubt you'll find a better pack.