I agree, each juice has it's own life with different volts. But then again the coils play a big factor as well.
For example:
If I took an ego-twist and a protank mini II and ran it over 3.7 - 4.0 my juice would give me a burnt taste. But after removing the factory coil, I rebuilt the tank using the "Super Nano Microcoil" that Riptrippers builds in his videos. He claim high volts/watts and no burnt taste and sure enough I can run one of those coils around 5.0 volts and never get dry/burnt hits.
But then again I also vape the same juice on my Stingray on a Kayfun tank with a 1.0 ohm coil in it and expected problems but never had any at the level of heat it produces. That is unless the juice is thick and doesn't feed as quickly as I need it to, then I have dry hit issues.
There are a lot of factors when it comes to dry/burnt hits but in the end just start low, work your way up and don't go for power... go for flavor!