BTW, for 22 mm rdas: I'm testing the samdwich, haku venna and wick'd with a .78ohm build (mtl clapton, 35, 5 wraps). I generally vape at 15-25w. I like the samdwich airflow cap because you can dial in the flavor you want, but the flavor on the haku is simply awesome. At the moment, I can't make sense of the wick'd. I'll be testing the skyfall rda next.