Came here just to say this. The cloudy white ones with the blue caps that look like actual labware and not a spinoff from a company that originally made labware, are functionally indestructible. If you think they're ugly, put some stickers on them. If you're worried about the health effects from drinking out of plastic, take a moment to think about what most if your food and water already is packaged in/flows through, and stop worrying.