I received my Joye 510 kit six days ago. So far I'm disappointed with the performance. I've read that it produces good vapor and good hit. So far for me neither have been the case. Atomizer seems to overheat and I get poor vapor production. I've tried drawing slow and less that five seconds which at times is a little better, but not consistently better. I did try a disposable e cig before I ordered the 510 and it had better vapor and a better hit. I just wanted to give my experience in the hope that others may benefit.