I have had a 2L Dromlite for going on 20 years. During that time it has been dropped, beaten, smashed tight in my pack, tumbled down more than one rock face, fetched out of a river and left out on my deck frozen solid for weeks in the middle of a Wisconsin winter. (not advised and I was lucky it was only 1/2 full) It just keeps going.
Several years ago some confused mice chewed through the webbing when I hung it on a tree limb overnight. I just replaced it with a loop of cord off the top grommet and it works fine. There is very little "bag taste"and I love that it can pour water 3 different ways. Plus it connects directly to my water filter to make it super easy to fill.
There are lighter ways to carry water including the dromlite which I also own but it is still almost 1/2 a pound lighter than 2 nalgene bottles. Also unlike Nalgene it only takes up as much space as you are using as it empties. The black color is both a plus and a minus depending on the season, it can keep it from freezing in cold weather but it will get warm if you leave it in the sun during the summer. All in all it has been one of the best pieces of equipment I have ever bought.