If you think your gonna get one, then get it now... its cheaper in the long run. Save you from buying all the "inbetweens" while working your way towards it. I havn't got one myself im torn between an EVO and the Provari. and im sitting at around $550 dollars in less than two months in
juice and Hardware. Wish I bit the bullet earlier gonna have to wait a while now.
The voltage is directly related to the resistance of the atty or clero or carto attached to the battery, there is a "sweetspot"
usually between 4 and 8 Watts. Ill attach a chart to refer to... down the left is the Resistance in ohms, along the top is the voltage.for example if your carto is 2.4 ohms then the sweet spot (in green) is between 3.25 and 4.25 volts. lower volts little to no vapor, higher than that could burn out/ruin the carto.