I've used insulated bottles, but I'm not sure they make a noticeable difference. Although it's refreshing to drink cool water on a sweltering day, my guess is that physiologically, the human body needs fluids, whether cold, cool, lukewarm, or air temperature.
Because I drink water frequently while touring, the two (or three) litres I carry usually only lasts two or three hours. Often I approach people I meet en route and ask them to refill my bottles. Most of the time, they ask whether I would like ice added, and I always say yes! After the water has warmed up, I drink it warm!