Just an update. I ended up not really liking the nautilus x tank even with the 1.8 coils. For one, after 2 days or so, my juice was getting a burned looked and turning darker. And the taste was not the same. I was running at about 12.5 watts most of the time. The tarot nano itself is a great device and it charges very quickly. Right now I switched to using an endura t-18 silver tank on it, running it at 12 watts. Much better vape and so far no problems with my coils. It doesn't look as good since it is a taller tank, but it is getting the job done. I just really like the internal 2500 mah battery. I may order the smoktech osub mini. It is not the 40 watt device, it has no settings. It is only 1200 mah, but I think this t18 tank would look better. I could just get 2 silver mods. I like the idea of the whole side being the power button. I think the t18 tank will look nice and should give me a good vape. If I decide to order a couple I will post a pic and results.