This pack has definitely been a great investment for me. One of the best parts about this pack is probably the bottom sleeping bag compartment. Unlike typical packs the Kelty opens completely, making access to your gear very easy and stress free. Secondly the Daisy Chain on the front of the pack works great for lashing down gear and clipping extra gear on the outside definitely a plus to this backpack. It feels very comfortable even after hiking for 5 hours straight. Haven't had any problems yet with this pack.
I bought this pack for my husband, he did a ton of research on the best packs in this class, for the price this was the best option, tons of room and different compartments. Unfortunately he hasnt taken it on a multi day hike but he did take it when we went to vegas for 3 days and it help everything we needed from clothing to extra shoes to a coffee maker :)
I bought one of these about a year ago and it has enough room for all my gear plus a midget (ok, not really, but it is freaking huge!) This pack has put up with more abuse than any other pack I'v ever owned and I swear it keeps asking for more.With extra compartments to hold water bottles, camera, gps, and all the other items you need to be able to access quickly, they thought of everything with this pack except the kitchen sink ;)