I’ve tried so many water bottles and this CamelBak Podium Chill 21 OZis by far my favorite.
I love its shape, makes it easy to hold the bottle, especially with sweaty hands, and the bottle doesn’t slip.
You can also lock it so no water spills out, ever.
Design wise it’s not the prettiest, in my opinion, but it’s OK and I like some of the colors, especially the white/purple (pictured) I own.
2 Cups 'N Run 