I bought these bottles because I could use it without using my teeth or fingers on the actual spout. This way I can share water with other cyclist on longer bike rides. It works for that. My issues with the bottle are based on how stiff the valve is and how far you have to move it to use it. I am used to grabbing a bottle from the bike cage and open the valve without looking. That move is almost impossible with this bottle. Once I open it produces a sloppy stream of water that will spray in places other than your mouth. The good news is you don't have to touch the spout with your mouth or fingers. The other issue with this bottle is the insulation. Its pretty weak. If you're headed out on a 100F day, don't bother with ice or cold water. Its as if the bottle didn't have any insulation.
I find that Camelbak valves are a little annoying to maintain and clean. I take apart the gray plastic ring and leakproof interior cap (I think that's the function..) after every ride and let them properly dry out. I use these for road riding and they hold up, though plastic like this won't keep super cool once it hits 80+ for a long ride. I stick them in the freezer for 10-15 minutes on extra hot days, and that helps a little with the cooling insulation.
I stopped using the Camelbak bottles a few years ago. There was always trouble cleaning the mold from the valves. Camelbak has supposedly solved this problem with the new easier to remove jet valve. The smaller size (by 1 oz) is a little easier to handle than the previous model. I filled up one bottle with ice, topped it off with water, and my water was cool up to 2 hours in mid 90 degree temps. I filled up the second bottle with water and put it the freezer overnight. Topped it off with water before my ride and the water was ice cold when I reached for it after my first bottle was empty. The water tastes good also, not a plastic after taste like some bottles. For info-the Elite Custom Race cages are a perfect fit for these bottles. Nice snug fit, you won't lose a bottle, and no more rattles.
I like these new bottles. While the valve is a bit harder to open and close, I am assured that nothing will leak out when I squeeze as ride. I like the ridges which make for easier gripping out of the cages. My only regret is that it did not come in an orange or a bright red (color of my Trek). I settled for the white. Great product Camelback!
I use ice in bottle and water stays cool for about 2 hours. Large bottles - front bottle on down tube easily accessible while riding and bottle on seat tube is a tight fit, but easily removable when stopped. Temps here are hot, and in 2 hours we're at 90 (easy) if we ride early. 3 hours in and the water will be pretty warm.
I ditched my old Camelbak Podium Big Chill bottles after dealing with mold in the valve several times. The new Podium Chill bottle has a new valve that is easy to clean. It's shape is easy to grab out of your bottle cage. I ride in 90o temps during the summer and it keeps my water nice and cold. I full them up with ice first and then full with water. When I grab for the second bottle, usually around the two hour mark, it's nice and cold. The only complaint I have is you have to squeeze hard to get water to come out, and it's near impossibe to get the last 2 or 3 oz of water out without taking off the cap and drinking it like its a water glass. The taller shape made me lower the bottle cage on my seat tube as low as it would go, otherwise it would hit the top tube when I withdrew it ( I have a compact frame). I have yet to find a perfect insulated water bottle, but this is close to it, even with the couple of complaints. These work very well with the Elite Custom cages.
The shape is nice and it is easy to get in and out of the cage. Not too tall to cause any problems in my 54cm frame. BUT if this is insulated, then I am Chris Froome! Ha! Water gets warm just as fast as an uninsulated bottle. I leave before sunrise to start rides and the water is always warm within 30 minutes or less.
Works as well as the older model podium chill, but is taller. I like the drinking nozzle better - easier to drink from and to clean. However, it is taller, so harder to fit in some of my bike bottle holders, and doesn't seem quite as tight.