You can get the emow mega in a kit, but I bought the tanks separate. Same coils as the Geni, Aero, and Evod 2/glass. I wanted tanks with the same coils so I wasn't spending a fortune on coils...hence for tanks, I use the emow and evod for everyday. I did splurge on subtank coils today so I can use that while I'm out as well, but that's the extent of my coil collection for now (minus what I build on my rda).