Hill Sloggerwrote a review of Black Diamond Mission 75 Backpack - 4455-4699cu in on May 1, 2013
Fear not the old reviews that claim bad quality, this pack is solid.
The waist belt is comfortable and stays in one place on your waist, no pinching, rubbing or chafing. The ball joint lets the pack move with you, keeping the pack centered on your centerline while the belt moves with your waist. It lacks the swing-arm shoulder straps that my Epic 35 does, but I believe that's a good design feature, as the Mission 75 is designed to carry more weight and the fixed straps keep the load centered.
I took it for a weekend test run, and had around 40lbs loaded in it. I cinched everything down VERY tight intentionally to test the seams and straps. No issues with streching or ripping of seams or fabric.
The crampon patch also happens to be the perfect size to carry a lantern. Also, the Ice-Link loops are perfect for my reflective winshield cover that I use as an insulation pad in my Hennessy Hammock.
The hydration sleeve works as expected, and having both left and right drinking tube ports is a nice touch.
The real test will be four days on Mt. Rainier in July. I'll post a follow-up afterwards.