I use and recommend the Eleaf Istick30. The coils on the Atlantis recommends like 20 to 30 Watts. The reviews and YouTube videos shows people going beyond 30 but it not necessay. The purpose is to show it can handle the wattage and the coil is good quality. I tried the CF battery and works good but there's no adjustment so you can't find that sweet spot for the juice you are vaping. CF Battery looks cool feels great but there is no flexibility. I can use the IStick30 on my Atlantis, Nautilus, Evods, and about anything I'd consider buying in the future. I can't say the same about the CF battery.