I love my ProVari rock solid performance and all the other that goes with it. Just got it back from being serviced and it's like new from some pretty nasty couple of years abuse, the worse being it had fell from my purse without realizing found it later in the bushes in my yard after a heavy rain storm. Picked it up an literally poured the water out of it. I packed it in rice for a few days not thinking it would save it but it fired up first time try. I went from an eGo to the ProVari skipping all the in between but when I left the eGo I loved the dual coil boge carts so when the innokin came out I dropped the viva nova and went that route until I discovered that was the first limitation of the ProVari that dual coil would not work properly. It would read the dual settings flipping from one to the next I remember but it just would not hit the same each time and no vapor. By that time the Kangers were out and I have stuck to that until now the Aero tank which is also dual coil. I have one and have not tried it and the B&M I bought it also sells ProVari one of the few places and the associate tells me I'm incorrect that the ProVari can use dual coil. SO I'm asking the vets....what is correct. Thanks.