I own a vape shop, and have run a across most everything. I'm a dripped at heart, so using a tank has never interested me. I've been using the ipv3 w/ the Atlantis and I must say that I'm absolutely in love w/ this tank!!! Set between 37-40W I get superb vapor production AND taste...the closest to an RDA out of every tank I've tried. Aspire made a game changer w/ the Atlantis. Already Kangertech released the Subohm Tank which has the option to rebuild, but to me the ease of twisting in a new replacement coil is one of the highlights!
I still use RDAs on my ipv3 of course, but for driving and other purposes I use my Atlantis.
So, if you're just looking to use the Atlantis tank then anything 100w and under will do.