I've got to say that I really like my new smoktek.com Smok Tank XL Lockable cartomizer. The build quality is there, and the locking ring helps the carto from spinning. I'm using the single coil XL with the flange at 2.0 OHM. I filled the carto, inserted it into the tank, then filled the tank and allowed it to sit for a bit. The draw is nice and easy, and the flavor and vapor production (70/30) is very good at 3.2 volts on my Twist. I'm also using less juice than I was with the Vivi Nova. I do suggest getting the filler tool smoktek sells because the carto won't slip to the side like plastic ended tanks do.
