There is nothing convenient about carts whatsoever, they are inefficient little pieces of dung. I have blue foamed, white foamed, Tea bagged, straw..blah. If you have an ego kicking around, do yourself a favor and buy a tank atty from TW, it changes day to day vaping so much. Sure for mods at home, I still drip or run cartos but thats only because i cant fit a damn tank on them yet! The thing is genius and works amazing and when it comes LR, life will be perfect.