Another vote from me for the Podium Chills. I have 2 of them and love 'em. I usually fill one with water and one with Gatorade, and the Gatorade bottle seems to retain a bit of the smell/taste of the drink, but I never get any kind of plastic taste.
My cheap LDPE bottle from the LBS on the other hand, that thing smells nasty inside and the water I put in it ain't much better. I was wanting to keep it filled with water in the fridge at work for when I bring my bike to work to ride during lunch, but I'm going to have to try to do something about that gross smell/flavor in it. Mind you that bottle had not been used for months until this past Tuesday, and when I tried to use it for my lunch ride... *blechhh*