I've had one for 3 months now and It is my main tank I use all day with the .2ohm coil. It vapes really nice for me. It does have small airflow holes but that's why there are 5 holes on one side and 5 on the opposite side for good airflow. I don't use my Atlantis anymore at all but I still use my kanger subtank at least a few hours everyday. I really like the scion and now they have a bigger version that's 30mm, for the 26650 mods. If you do get one of the quad coil clearomizers, make sure you try the .2ohm coil. I've tried all the coil sizes and found the .2ohm vapes the best for flavor and clouds.