I got my order today and I've been experimenting several hours now with the Ego Mega Dual Coil cartomizer. I must say that I'm surprised with the great performance. It's far beyond anything I expected in terms of taste and vapor, and it was very easy to fill. If anything, the flavor of the juice is BETTER and stronger. I've already done a side by side comparison with the same juice and a Ego-T Type B large tank, and the EMDCC won in all areas. Now, let's see what happens after a day or so and the first top-off. So far, I'm very impressed. I don't have an opinion yet on how fast it goes through juice or battery power, but I suspect that it must be faster because of the increased performance.