There is supposed to be a flavor difference and vapor production difference in dual vs single. Supposedly dual coils make more vapor and allow for better flavor taste. But I have personally noticed that my dual coil tanks tend to provide less taste. But they do make more of a ruckus when heating up, Popping and crackling and whatnot, and they do seem to make more vapor. Im not into rebuilables. I just keep top single coil tanks, and bottom dual coil tanks on hand for daily vaping.

I think it really depends on your juice as well. I know when I was using the Dekang juices it was a different consistency and the double coil versions worked those juices so much better. Now that I am using a local dealer for my juices, which are slightly thinner, the single coils seem to do better. When i tried to the double coil with my local juices they seemed to burn too fast and I would frequently get a burnt taste with them. The premium Aspire Nautilus atomizer would provide good taste production without the trouble of rebuilding your atomizer coils.