After having a JS for a few weeks (manual) the switch began to fail. They immediately sent out a new one which worked fine for a bit but now the vapor production is horrible unless it's plugged into a usb port. I'm not sure what the issue is, I've tried swapping batteries to no avail. I'm really hoping the V2 solves these issues. The JS is far from the holy grail of e-cigs I was hoping for- I think many of us felt that this would be one of our main e-cigs. I've actually ordered a kissbox in the mean time and love it- I am a fan of Janty products, this one just seemed to miss the mark. I have never had customer service issues at all and I'll continue to purchase their products. I'm just a bit disappointed in the JS as it stands now.