I have now purchased my forth Delta II tank. I keep them in rotation with different RBA coil builds and different juices. There is not a better tank that I have found in the 7 years I have been vaping and building my own tanks. I have a vast experience in building coils and know most of the secrets in wicking for the best flavor results and the single coils do the best. The Delta II ECIGGITY is pricing at $9.99 is our of this world and I have going to have my box with a new one on have. You can vape them at 0.5 at 30W to 1.5 at 12w and you dont need to try to vape lava. Just enjoy to flavor of your juice.