I watched tons of reviews and tried to purchase intelligently. I am one of the few that is not a big fan of this tank. It is just way to airy for me. I did purchase the 2 hole band and used it also. For me the flavor is not as good as the kanger subtank. I tried dual coils, single coils, the single coil was not a good idea, but thought I would try. I had the dual coils running about .5 I think it was with 26 gauge wire. Flavor was just not that great to me. Just seemed to airy. I even turned the ban where the 2 exposed holes would be about half open. The juice just seemed weak to me. I am comparing this with how the same juice tasted in a kanger rba running at .5 also. I know alot of people are praising this tank. I don't think they are lying, it is that good to them. It was just not to me. Just posted this so if someone is thinking about buying it will give them one opinion that isn't praising this device. You might love it though, alot of people do. Don't really know why mine did not have that great of flavor.