@710 definitely has justified the purchase many times over. Used heavily with waxes, oils, shatters, I use a itaste vv4.0 battery at usually 4.0 v the coil reads at 1.6 ohms and recommends 3.98v. I have pushed it harder, 4.3-4.5 at times. Not one issue with it at all. And I am too lazy to clean...