I currently have a mvp 3.0 pro with Atlantis tank 0.5 coil my juice is 70/30 and it's ice.I'm going through coils pretty fast maybe lasting me 4 days maybe I prime over night and work my way up in watts (19 to 24 is good for me) I am looking into the isub tank with that bein said I need to know first how long the coils last so if anyone has the isub please tell me how long a coil lasted for you i could use all the info possible before I buy tia