The Mutation series rda's allow for crazy big airflow. My buddy has a v3 and the large chamber, four post design and airflow options give him the ability to build it and run it pretty much however he wants. It can be setup to be a ridiculous cloud chucker, but it can also be setup to give really good flavor. The first time I played with it I was really impressed with the flavor. I thought it would only be good for clouds, but I was wrong. Happy hunting.