Josh W. wrote a review of Mountain Hardwear South Col 70 Backpack - 3975-4275cu in on January 30, 2013
I sorta hoard packs...I literally have a dozen but this is by far my favorite. Its great for multi-day alpining and compresses down to nothing if you're looking to use it for some quick day runs. I would recommend buying the optional Fitlock belt if you're going on long hauls. Also spend some time playing with the ice tool straps. They take a bit to get used to but once you do you'll be strapping whatever you need to them in no time!