I just purchased this, but in the time that I've used it here are my thoughts: -Average/good vapour production -Good taste -Little/no break in period -No leaks so far (will post again if it ends up leaking) -Holds enough juice to almost last me a full day (more then enough for when I'm at work/out. Aprox. 9+ hours) -Moderate condensation in the mouth piece (which is expected, but more obvious because of the clear plastic)