I have been using an e-cig since last June. I'm very happy with it. A few months ago I got my first Reo. It's a grand. I love it. What I don't love is the performance I get with a 510 atty. They work ok for a while, then they get really awesome about a day before they quit. Or they last 20 minutes. I have finally given up and switched to 801 shortys. I have a 1.8 ohm that freakin rocks on flavor and vapor. I had a 2 ohm that just died a week or so ago. It was great. And it was 6 months old. I never got that kind of performance with an 510. Just wondering if anybody else feels the same.