I have found that it varies from device to device, usually depending on the air flow. I have a DFW Ratank that requires very little volts/amps. It tends to produce a lot of vapor at lower volts, and the throat hit is warm and deep. If you crank it up too high the throat hit gets too heavy, and not from hot spots, just a serious lung punch. I believe each unit is built to be mastered by it's owner, and only you can find the "spot". Not only is taste subjective, so is throat hit, and heat. I have several devices which perform differently, I reach for the one I am in the mood for.