My wife and I recently began using the Ego Twist batteries and have tried a few different cartos on them. We have used the Ego c tank system, the Ego vision clearomizer, and the GotVapes Phoenix bottom coil cartomizer. We have found that some work very good and some are a bit iffy. Our favorite so far is the Phoenix. Our question is, what do you use on your Ego or 510 battery? We are looking for suggestions on what others find to be the best setup for them. We also don't want to drip on attys as we are on the go a lot. Our main goals are easy maintenance and filling, hold 1-5 Ml of juice, and of course great flavor production. We're very excited to try out your suggestions. Thank you for your time and replies.