2 weeks ago, I would have told you to get the CLR coils. But after two weeks of CLR coils leaking all over me, I'd have to say don't. They are a flawed design. Liquid eventually drips down into the air hole in the coil, and out all over your mod and clothes and hands. I'm fed up with them. I was so psyched about them, but there simply isn't anything stopping leaks from happening. I've gone through many coils, trying different amounts of cotton, in different ego one tanks, and with thinner and thicker juices... it's just the wick design - the wick goes in a hole and through the coil, but there is simply too much space inside to stop liquid from dripping where it wants to go. I never had this problem with regular ego one coils.