I had the Osprey Kode 38 and the brain zipper busted. Didn't have time to get it repaired before the guiding season so I bought the Kresta 40, excited about the small frame size because the Kode was a bit too big for me. My general impression is that the pack fits great, holds a ton of gear, and is durable, but Osprey went a little overboard on features on this pack. I'm a bit disappointed in the new zippered avy gear access--I think the old drawstring approach was faster and less fool-proof. My 300mm probe BARELY fits, and I'm a bit worried I'm going to bust the zipper on that pocket one day. The compression strap buckles are weird to adjust, but will definitely not slip when your skis are attached to the pack. It's great that you can remove the brain, but there's no good way to tuck away the cover underneath when you are using it, and it gets in the way. It makes buckling up the top compression strap a pain. The extra padding is great for abrasion against rubbing points on your skis, but adds extra weight. Bottom line: great pack for long tours and carrying a bunch of gear, but I hope it gets refined a bit in the next model.