still testing it
I have gotten this recently (1 L version) and it does the job. I was looking for something lighter (this is 600 g or 21.16 oz) but did not have time to continue my research. I would be using this also outdoor in cold temperatures (down to -30 C or -20 F). I would be comparing the performance of this bottle with the Nalgene Tritan/OR Water Bottle Parka combo (together they weight half of this bottle, 300g, cost a bit more around 34$ and are a bit more compact). Recommended use is clearly marked as "camping" so I cannot complain too much anyway. :-) I have also considered the Primus 1L but it was a bit more expensive and only a little bit lighter.