If you're using these for day to day or traveling (love them for travel), I would say they are great. However, I have been super nervous taking them into the backcountry and on multipitch trad routes for fear I would puncture them. I have two and had one get a couple small holes in it which they replaced. Now the other one is leaking from the lid because the plastic top seems to have deformed and it won't seal properly. Also, note that you shouldn't put iodine tablets or the like in them. It leaches to the bag. While I'm not worried about the discoloration, I am worried about the subsequent effectiveness of the tablets doing their job.