I just got a new water bottle today, coincidentally.
It's a metal lined ThermoFlask from the costco. I have been using Nalgene bottles for years and replacing them around 6 months. My last two bottles kept smelling off to me, so I decided to change to metal. So far I like it a lot. I am hoping it's easier to keep clean than the plastic water bottles.
I hate buying so much stuff, but I'm sure the plastic lid on this bottle will give out eventually and I'll need to buy a new bottle unless I can find a replacement lid online. I try to be frugal, but I think it's worth it to spend extra when it comes to what you're putting in your body.
This post gave me an idea to try. I'm going to write the date of purchase on all my new bottles and use that as a guide to get a new one or at least evaluate how well they hold up.
I wish you a wonderful hydration, fellow h20 enthusiasts!