I have 3 CamelBak bladders for 2 packs. 2 - 100ml "Antidote" /w quick release hoses, & 1 older 70 ml bladder. No plastic taste that I have noticed, and I definitely would have noticed if they did. I HATE THAT TASTE!!!
The Antidote model is a LOT
easier to open and close. (Sometimes with my arthritis, the old model is a little tough to unscrew!)
I just purchased the 100 ml insulated bag. Hasn't been cold enough to give it a real test, but I can tell u if u use an "Un-Insulated" bladder & hose, the hose will freeze SOLID the first time you drink from it in sub freezing temps. And then the hose takes forever to thaw!