This is one of my new personal favorites.
Goes from a moderately restricted lung hit, right down to almost nothing. I havent tried MTL with it but I imagine it would be ok, as the airflow adjustment occurs inside the chamber, close to the coil.
Flavor is top notch, the draw is smooth but can sometimes get a little turbulent temporarily if you oversquonk and get some juice stuck caught up in the airflow channels.
Overall quality is really good, only negative being the top cap tolerance is a little tight.
Be mindful to put the top cap back on in the correct orientation, as doing it the wrong way will effectively chop the tails off you wick. Ask me how I know....