I haven't found a single bottle that comes close to the performance of this bottle. It doesn't leak, and is surprisingly durable. I have dropped it, run it over, and done god knows what else to it and a year later its still in perfect condition. The only issue I have is with cleaning the "jet valve". I have a tendency to lose things and 2 weeks of sitting with hot gatorade can build up serious mold. Spraying hot water and soap thru it makes me comfortable with any leftover discoloration.