Will speak in generalities rather than brands.
1. the more coil around more wicking you have, the more vapor you will get.
2. Getting to Sub-OHM levels will produce more vapor.
3. While fun, building coils can get old if you have a 4 or more coil vaporizer.
4. When going Sub Ohm, the battery you use is more important than the number of coils - they can literally blow up. Get an OHM meter, it will save your life.
5. If you dont want to drip into the atomizer every few minutes, you will want a tank. These can be tricky, but worthwhile. I have this.
Remember,
PG = More Flavor
VG = More Vapor
Mix gives some playing room.
Again, these are all generalities and meant to be something to think on.