Our house bottle (bidon, as we say around here), we use the 22oz (625mL) Purist model from Specialized. It's washable (by machine, even), doesn't pick up odours and looks great on your fly ride. Grab two, you'll get thirsty when touring!
Now with gorgeous matching colourful art for the Bassi Hog's Back (designed by Simon Roy) and Coyote (designed by Brian Ejar) frames.
FYI these are recyclable once they reach the end of their life. Made in USA.