CrazyCap 17oz vs Simple Modern Wave

I was very excited about purchasing this item, as I have a water bottle that's been with me ALL the time, just like my right hand for the last 7 years. I also am a huge fan of the Berkey filter and use that at home, however, was always pained that when traveling overseas I would always have to refill my bottle from a plastic jug that the homeowners I stayed with usually use. Or I'd get some kind of poisoning and end up off-site for a few days. So when these UV bottles became a thing I was very excited

By the evening there was only one or two shreds of ice left. I decided to stop drinking it after 6 hours to really test it. I left it sit overnight probably half way full maybe less and that shred or two or ice cubes left. I woke up the next morning and the ice was all gone but the water was still ice cold somehow! Very impressed