I have both. I bought the Polar bottle first and while it kept the water cool in the Texas heat, I found it hard to squeeze and the top flat out sucks. I recently bought 2 Camelback Podium Chills and it not only keeps the water cool longer than a non-insulted bottle, the top is awesome. The bottle itself is much easier to squeeze and combined with the superior tops I can easily get a big blast of water quickly. The Polar bottle probably keeps the water cooler slightly longer than the Camelback but the ease of use of the Camelback trumps that for me.