For the money, one of the most versatile packs you can own. I use this as my main pack for backcountry skiing/touring. Comfortable, reasonably light, and very utilitarian, it holds all my avy gear, water, and snacks as well as extra clothing. The back panel access is a must have. I will also say this bag travels well. In the summer, I can fly with a week's worth of clothing and it fits either in the overhead bin, or under the seat. I have never been hassled about it's size for a carry-on. The straps all tuck in neatly so you don't have loose things flying everywhere.
Although none of the zippers have failed, I would prefer more heavy-duty waterproof zips.