Then it is hard for me to choose~~ let me think about it. Thanks a lot
There's a few things working against you. Subohming creates the biggest clouds. But to subohm, you need to use a subohm tank. And the subohm tanks are designed for lung hits, for 2 reasons. The first is what I already said, you need air for vapor. But another part is cooling the coil. You need to pump a lot of watts into a subohm coil, and the airflow needs to cool it. So the tanks are designed for airflow.
If you really want to stick with m2l hits then you're limited to the smaller tanks that are designed more for flavor than mass amounts of vapor.
The only other thing I could recommend is a dual coil rebuildable tank, and that way you'd be inhaling twice as much vapor, but I don't know if you're interested in rebuilding.