Kanger Pro Tank3 BDC resistance

The PT3, Evod BDC/glass/etc and the aerotanks including the mega have heads that are interchangeable. If the kanger head is the taller one they are interchangeable. IMO the PT3 head is better than the BDCs as the enclosed one does not have as good a juice flow. To me IMO i think the enclosed non mega heads were not an improvement just Kangers attempt to make it rebuild proof. Which it is not. LOL just more trouble to rebuild. I don't have the mega head yet have some on order will see if they are better. They are suppose to be moe like the Nautilus head. You don't say which mod your putting these on. If you're using a twist or other early type versions of the ego batteries they supposedly don't like heads below 2ohms very much. So the 2.2 would be more desirable than the 1.5 ohms on a igo battery.