Better than free - CamelBak Podium Chill Water Bottle, 21oz

I am notoriously cheap, but I buy these water bottles as my go to and give away any of the free water bottles I get at events, come with a pack, etc. The biggest thing that separates them from other water bottles is the valve system. They never leak or splash in the "open" position until I squeeze them, meaning I don't have to open and close them. And in the closed position they can roll all over in my vehicle or whatever and don't leak. The wide mouth makes it easy to add ice. I don't ever have liquid in them long enough to know how well the insulation part really works.

The tapered shape works well in my running vests. When I tighten them down at the top they are secure, but it's still easy to remove them, unlike other bottles.

I love the variety of colors available. Not for fashion reasons, but because I can color code for content. I have some that I only use for water, others for Gatorade, another for Coke, etc. I don't ever have to open them to know what's inside.