Ok, so i started with an Atlantis v.1 then got a subtank mini, then an arctic, then a starre, then a herekels, the smoks tct tank atlantis v.2 then an ijust 2 kit uwell crown on the way. dont like the atlantis 1 or 2. just not for me. love the subtank for flavor and its a nice tank for 25 watts looks good on the the ipv mini 2. gave the atlantis 1 away to my brother. he liked it, but it fell short for him after a little while so i gave him my arctic since i was really liking the starre (still do) the herekels is awesome especially when you pop a .2 coil in it and knock off the afc ring. Love it. smoks tct is cool got for the ipv4 wanted to mess with temp control and enjoy it. clouds are good flavor is good but coils seem to gunk up quick. the ijust just came in last night. loved it on my drive to work. its small its the perfect weight for my shirt pocket other mods drag it down and make it look strange. It vapes great. great flavor clouds are fine (not something im really that concerned about personally) but i dig it. my 2 cents on the tanks ive had. But after all this rant i have a question. How long should these coils be lasting? i look down the barell and they look dark and then i pull em apart and they most likely still had some play... anyone have any suggestions or time frames they have seen. list any and all coils even if i did not mention it above. Thank you.