I will start off by saying I am a huge fan of the base unit design, it is incredibly comfortable and the 97% survival rating is fantastic. That being said there are a few things I don't like about this design. The ski carry needs to be redone, I am planning on changing the diagonal carry a bit. I would like to see a way to compress the pack that does not cross the airbags. I also would prefer a from shovel pocket that is more easily accessible. I just purchased the Dakine Altitude 40L for longer tours and I am extremely happy with it. Over all I will always ski with an ABS pack for the safety it provides but this needs some minor tweaks.