I've been a user of Sigg drink bottles for a few years now. I tend to drink about 3 litres of water a day. Lately the liner inside my drink bottle has started deteriorating so I'm curious if anyone has a recommendation for a different brand.
I like the sports top on the Sigg because I can drink lying down and from any angle, but after a couple of years use, it's starting to look worse for wear.

What bottle do you use?
What do you like about it?