Difference between PV's besides aesthetics/atty/battys

[Kosmarnik]

Hi!
After a year of auto 901 battys I tried a 905, was wonderful until it snapped in half a month later.

I'm now heavily researching what PV would suit me.
Ok, if one leaves the aesthetics/construction aside, there's the battery and the atomizer.
I'll use the same atty batty combo (14500+901/901LR).

In theory, all PV's should vape the same if using the same atty/batty combo, but I have a feeling they won't.

What about the electronics or the lack of them in a PV?
What else can influence the vapor production?
Please veterans, help out here!

I'm currently look at these PV's:
BB
VP2
Unisex
Protege
Bulli Elite

If you have had the chance to use 2 or more of those with the same atty/batty combo, please comment.

 

[Kurt]

If the 3.7V 14500 battery is voltage-regulated before the voltage sees the atty coil, such as an eGo or Tornado (although those are typically 510 attys), then the voltage the coil experiences could be less than 3.7V...those are about 3.2V. This will of course affect the heat created (watts = volts*volts/ohms-of-coil, and I think the 901 is about 3 ohms).

If there is no voltage regulating, such as the Hello016 (don't know about the 905, sorry), then the coil will be getting all 3.7V from the battery.

This will likely be what causes the largest difference between how different PVs vape with a 14500 batt. There may be other differences, but if the atty is identical across different PVs, then this should be the main difference. Of course, even the same make of atty, like DSE901, can have variations in resistance, which would affect the vape too.