Love this. Never really thought about the issue with the way other water bottles were "mouthed" until I saw the design of this one. I have only owned it for about 3 weeks, so we'll see if I have the other problems people described with it leaking, but so far I am pleased with this bottle. I even like that it's smaller and can fit inside of my (larger) purse. I'll just have to keep an eye on it, now.