I have finally found MY sweet spot! It has taken quite a few e cigs and I can't believe it but I am back to the standard 510. I couldn't handle the eGo, too big and looked too funny. I needed an e cig that was the size of a real cigarette and performed like one. I finally decided to try some LR Boge cartomizers on my standard 510 battery, and wow, I love it. These LR carto's kick out so much vapor! I am not an all day vaper like some, so the battery like isn't really a big deal to me. Bottom line, I have finally quit smoking. 