Oh Snacks, please dumb this down for me. When using the Mighty I start at 360 degrees and as the vapor diminishes I increase the temp by 10 degrees at a time. There is no watt mode (as far as I know). I'm looking for on-demand, cool and thick vapor and the most effective and simple way to achieve this.
Do I want the 2 or 3 battery device?
What he said about # of batts^ and they are swappable either way, but 3 makes it all heavier ofcourse... Batteries should be paired sets btw, if you have spares, always keep a pair together and charge together (if charging externally) as if they are like one big battery (same goes for 3batts).
So wattage just means power, no temp control, more manual, but also stronger hits typically. If you use lower wattage, then it can work like temp control, but it is more controlling the rate of heat up. So if you have wattage set high to 45w, you would want to draw fast and hard relatively, and not hold the trigger too long as it could scorch the load. Low wattage is more forgiving, but could require some coaxing, a slower steady draw. The technique sounds more intimidating than it is, most people find it natural and intuitive once they try it for themselves.
So most effective and simple, for Splinter, would be to just use wattage. Nothing to configure that way, no worry of DNA chip or firmwares, just pick a mod you like for its form factor... You can always figure out temp control configuration later on, I know it sounds intimidating, but it really isn't so bad, many of us here have felt this way when jumping into the world of mod-based on-demand convection vaping and we mostly have gotten going with far less trouble than we initially anticipated!
I will say now that I have tried it all, DNA temp control with a splinter Z is quite impressive, so it may be worth getting one of those mods just so you have that option... I have not tried a Z configured for temp control with the other type of mods, just my V2 (so I think it is also a pretty good option, but potentially more involved)