VW is not all it is cracked up to be. Switch from a single coil head running at say 6watts, to a dual coil head, with the device still set at 6 watts. You are now only pushing 3 watts per coil, and you may be struggling to get any vapor out of it. Do the same in a VV device, and now you have both coils working at the same capacity as the single coil did, and you see the advantage of dual coils actually working. A VV device would react much in the same way. Mech mod would in that aspect. And as a side note, I always run my VV/VW device in VV mode as it always felt more natural.
And I'm not saying you can't have your opinions, just need to clarify that there is some flaw in the advantages of VW over VV. As with anything, there is no free lunch. Always advantages to both sides. Just like the display may be outdated compared to other devices, many like the simplicity of the features, just like many like the simplicity of a mech mod (which also has limitations compared to an APV).
FWIW, I currently have an eVic that is dead after only 7 months (and I baby my equipment), sitting in a drawer, and currently using a Nemesis clone (kicked, because I can't stand the vape quality changing as battery dies), have a ProVari on the way, and have owned many of the traditional battery systems. Been vaping for over 4 years, and not a sub-ohm cloud chaser....so for my opinions on what work best for me may not apply to what works best for someone else
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If you put a 2 Ohm single coil on your Provari set to 4.2v, then you'd get 8.2 watts.
If you put a 2 Ohm dual coil on your Provari set to 4.2v, then you'd still get 8.2 watts spread across all the parallel coils (4.1ish watts each if there are dual coils of a matching 4 Ohm resistance each).
If put put a 2 Ohm single coil device on a VW device set to 8.2 watts, you get 8.2 watts of power.
If you put a 2 Ohm dual coil on a VW device, you still get 8.2 watts of power (Roughly 4.1 watts per coil assuming both coils are exactly the same resistance).
So, with either device, if you want to increase the wattage 'per coil' in a multiple coiled device, you'd have to increase the setting.
There are some cases where VV can be an advantage over VW if you intend to use it below 5 watts total (typically the lowest setting for most VW devices I know of). The same can be said if you happen to have a VW device with a top setting of say 10 or 12 watts...yet the safe amperage ceiling of the device has some room to apply more voltage and still be safe. I.E. With my Artisan Crown and the right low resistance atomizer coil, I can safely go much higher than the 10 watt max setting in VW mode by switching over to VV mode. I can also choose a higher resistance atomizer (I.E. 4 Ohms), and go well below 5 watts in the VV mode. In short, with VV and some knowledge of Ohm's Law, you can sometimes attune your device for more temperature 'ranges' than possible with some VW devices that have more limited ranges in 'settings'.
Not sure about the Provari and how its safety features are implemented, but it's possible with some VV devices to 'under-drive' a low resistance atomizer to keep it within a certain current range. I.E. You could keep a 0.5 Ohm atty from going over 5 amps by setting it to a locked in 2.5 volts. That would still give you a little over 12 watts of power for your coil(s)!
The main area where VW sometimes falls short is simply in how its 'auto-pilot' is calibrated (they are usually calibrated to afford the full range of settings when using an atty from 2.5 to 3 Ohms). If the limit is say, 5-10 watts...yet the device is capable of bucking/boosting a range of 2.2v - 6v....then you could very well be missing out on some of the device's full voltage bucking and boosting potential.
Where VW is nice...is if you're often swapping similarly designed toppers that might happen to just have different resistances. It's easy to pretty much set it and forget it. It's also nice with stainless mesh-wicked stuff (I.E. Genesis Tanks) where the coil resistance can hop around a bit during a draw if it's not well oxidized and broken in.
I personally build my own coils to suit either method these days...both VV and VW are fine if I need to make a minor adjustment. Either gets the job done well
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