I have been blown away by how reliable and convenient my Growler is (a Stanley Classic Easy-Pour Growler 64oz). I love carbonated water and work in an underground mine, I fill that thing full every day I work and bring it down. I never lose pressure (aside obviously from when it's opened), it stays cold seemingly indefinitely, the safety latch ensures the swinging lid hits nothing, and the thing is so solidly built it hasn't sustained a single nick despite falling on rock, etc. I'm a happy customer.