I still use the CE's. I love them. I did try the very popular evods, but they are a bottom coil unit and the vapor is cooler. I really enjoy the warmer vape of a top coil like the CEs. They start going bad when the draw gets tight, you get less vapor, and the liquid starts to turn darker. I use the CEs where you can change the coil out. I get coils for less than 2 dollars each. Some of the CEs you cannot do that and you dispose of the entire unit. I change coils every 4-5 days. Your mileage may vary depending upon your taste buds and type of liquid.