I dont really worry about weight, I do care about durability. I used gatorade bottles until I had one fall, The only bottle I had, and it busted, deformed and the mouthpiece broke. I was only 3 miles from civilization so it was no biggie, but if that was in the field, I would be screwed!

I also found that the Nalgene 32 Oz. fits perfectly into the side mesh pockets on the Outdoor Products Daypack. I cant afford much more than that!

But, Another reason I prefer 32 Oz. Nalgenes is because the GSI Outdoors SS Cup I have fits them perfectly! I am pretty picky about getting new stuff, I already ahve... Otherwise, I love buying new shiny and useful Gear!!