Attention to detail
Recently bought the Altra 75. Fitting was a breeze using Arcteryx' online guide. This is a big pack, but the straps allow you to reduce the volume down nicely. Underloaded, Overloaded (yeah right), it balances well. Access is easy, and has a lot of options to organize and get to your gear, whitout having a buzillion pockets. The swiveling hip belt helps a lot with scrambles. I found my lifetime pack.