Nice pack, but they skimped on the quality of the Hydrapak reservoir used. Hydrapak makes nice stuff, and their better reservoirs have the ability to turn inside out, and for the hose to disconnect from the reservoir for easier removal from the pack and more efficient drying. The model included in this bag has neither. I replaced the reservoir with the better one, as those features are quite nice.
Only other gripe would be about the zipper on the bag. It only opens part way, which is a little annoying and seems unnecessary. Other than that, it is a solid pack, with lots of good organization and nice details like "keepers" on the straps to help things stay out of the way and tidy. Oh, and the TeTrakt magnetic hose return system seems to work perfectly (and I was able to slide it off the old hose and onto the new hose with some effort.)