I know the difference between the two have been discussed 1,000 times. I am talking about Vapor production this time around. I have the Zmax and I run some 2 and 3 ohm and I feel that I get more production on the 3 ohm. I run a set 9 watt power to them both. My question is, am I thinking clearly or is it a placebo effect that the 3 ohm is making more vapor at the same wattage? My thinking is that the higher the ohm the larger the coil. This leads me to think that while I use more power to heat the coil, there is more coil to vaporize the liquid.