It's the luck of the draw, some bottles are good and others are not. I find that it's not so much the bottle, but the bottom part with the mouth piece and the valve. After a leaky valve the first time, my second one was great, and I've stuck with that one ever since. I've changed the bottles, but just screwed on the same bottom section (until very recently when it cracked and I had to change it, but I was lucky, the new one seems fine).
I think it helps when the bottle is full, and when the water is at room temperature. Also, I use a bottle where the hook is at the top. So there're no wires squeezing around it.