Ideally when I start the day I would like to have enough power and eliquid for a couple of days without access to ac power. The easiest way for me to do that was with an iStick 50w firing 1.5 ohm coils at 15-20 watts plus an 18 ml bottle of liquid. So far I've been doing TC with a Kangxin mini (460-500 degrees, 30-40 max watts, .15 ohm coils) with a spare battery which I doubt would last two full days. It appears TC uses power less efficiently because of the very low ohm coils required but I haven't tried to measure that precisely. I'm steering clear of the iStick 40 for now because it won't get me reliably through one long day let alone 2. I'm not dissing the 40w. It would work for my brother who consumes about 3 ml of liquid daily compared to my 6 ml. I wish there was a TC version of the iStick 50 to tempt me but I expect I'll evenutally have a TC mod with 2 replacable batteries eventually (the vapor flask form factor is larger than I want for pocket carry). The other complicating factor for me is I love the chip functionality in the Kangxin mini but I don't love their two battery model which is a full size vapor flask form factor, Too large for me.
