Well it is getting frustating for me just to enjoy vapeing. I seem to keep spending more money and time trying to find the best way to vape at all, do not get me wrong I understand e-cigs are still kinda of new and many bugs need to be worked out, but I have a Joye ego and the battery works great but the carts are a pain to fill even with the blue foam, I have tested just cutting the white filler small and no luck with that, then we have the attys getting burnt taste after a week or just not working hardly at all, went to the LR atty same problems with the carts, so I move to the cartos I tryed the regular 510 guess what to much air really no vapor, so I move to the next step LR Cartos my first pack every one I tried had a burnt taste, know I am looking at the E2 v4 cartos and I just do not think I have it in me to even go there. I just want to set back and vape and not worry about how to fill it or some mod. I am not going to give up and the e-cigs has helped me so much from regular cigs but it would just be nice to vape without a fight.