No worries cryston, all the posters who were using plastic bottles from 9 years back have all passed on due to leeching issues. May they rest in peace.
I agree that plastic bottles sometimes have a funny taste to the water, especially when hot, but just have never gotten around to getting metal ones that fit properly and safely in my cages.
If you put some booze in them it kills the plastic taste.
I've been using Velo Orange Mojave cages, which fit a nalgene sized bottle. Unfortunately I haven't been able to find a nalgene sized bottle with bike bottle style spout that allows you to drink without stopping and removing the lid.