thanks, i have been eye balling those Aremas tanks too...
The Artemas is a fantastic carto-tank. With the Zmax, flattop at least, they do sit VERY close to flush with the top of the device. Kind of restricts airflow, not to an unuseable point, but if you like looser, more airy draws you may want to pick up a 510 to eGo adaptor for added air flow.