Have have and Ego and a 510. About 4 months in I decided to try a mega atty and cart on my Ego. My regular atty and cart worked better. Don't know if I got a faulty atty or not but I wasen't crazy about the mouthpiece anyway so I put that away. About 5 months in I got a couple LR atty's Didn't see a lot of benifit to them outside of lots of vapor. Recently I got some 510 carts and they work well. I guess I'm looking for bigger batteries?? Different attys????? Need help with this. I'm slow to change.