You can run the Cloupor down to .45 ohms. My set up is an N22 dripper with a .71 ohm dual coil and I normally run at at or around 20 watts depending on the juice. The only problem I've had with the mini is the plastic cover over the goodies inside came loose after 3 weeks. Put a couple of really small drops of Gorilla glue on it and it's good to go. Cloupor seems to have to the early issues worked out, and it's slightly cheaper than the Sigeli.