I have a Klean kanteen 40 oz bottle. I love it and take it everywhere with me to the point the wife loves to tease me about it. However every time we go somewhere she is the one asking for a drink from it. Funny how that works. I only have one complaint. I have the standard non insulated bottle, I load it up with ice every chance I get because the summers here in TX are not the coolest thing around. This bottle sweats like theres no tomorrow. I always have to have a paper towel or something to place under it because it will most definitely leave a small swimming pool wherever it sits. I have considered purchasing the insulated an insulated bottle to eliminate this issue. Other than the excessive sweating when loaded up with ice I love it. As mentioned in many replies I too have never had any metallic taste. I have dropped it a time or two and taken a hammer and long punch to beat dents out. I love mine and would highly recommend one!