I have this EGO kit (EGO-C Twist with Vision CE4 and 5 Clearomizers) An I love it. Now the Clearomizers come with stock 2.4ohms Atomizer heads in which I would change out to 1.8ohms and leave the 2.4ohms for back ups for say when you clean the atomizer or the atomizer is done and over and you cant get to the vape shop to get a new one. I run the 1.8 on all of mine and love it. Better throat hit and the flavor of your juice(s) are dead on.
I keep atleast 4 Clearomizers filled at all times. I may be enjoying a tobacco Vape through out the day and decide that I want some peach, cherry, pina colada or carmel apple. Since my tubes are already filled I don't have to disassemble everything, clean, change the head, re-assemble, then fill. All I do is turn my battery off, Take the Clearomizer off, top it off, grab the flavor I want, twist it on, turn the battery on and Im good..... Saves a lot of time.