I have had this bottle for about a week and I can say that the quality is great. It doesn't leak, it doesn't have crazy condensation, and it keeps drinks colder for longer than a plastic blender bottle. I also like that I don't need a wire whisk because there is that function built into the lid.

I cannot vouch for how long the lid will last. According to others they tend to break, but I decided that I needed something to help mix my casein protein, so I bought this. What a difference compared to stirring hard with a spoon. I was too lazy to bust out the blender, but this shaker works great. Hope that it last. I would give it a 5 star but it has zero insulation, which I knew. Just amazing how quick it gets cold pouring cold water into it. Still, I really like it.