I never would have imagined that switching from dual coil clearomizers to a Kanger SubTank Nano could make such a difference in vaping overall. My first subtank just arrived a few days ago and I am astounded in the difference in the flavor and of course vapor production but mostly the flavor enhancement of my new favorite juice flavor. After a couple of weeks of searching for a good coffee flavor juice, I discovered a flavor made by "Velvet Cloud Vapor" which is called "Night Shift". It is a coffee and glazed doughnut flavor that is out of this world in my opinion. I was told after sampling it in a clearomizer that once I filled my new subtank with this nectar, that the flavor of this juice would be vastly different and they were not kidding. I chose a 0 nic version and this juice is straight kosher VG which I have never had straight VG before so I guess that is the attributing factor to the great flavor coupled with the subtank's great performance as well. I am using a Vamo V7 regulated mod for the power and set it at around 20 watts to suit my taste at this time. If any of you who are fairly new to vaping and wondering about trying a subtank for flavor, I highly recommend that you give a subtank some serious consideration. 
