ALERT!!!! The following reply is wordy and boring!!!
I remember a couple big differences when I first tried 5V's was the dramatic increase in flavor from my Juices and the elevated temp of the vapor. I also noted more volume of vapor and somewhat more Throat Hit.
As far as the "Science" goes, there are many variables involved which may explain the wide range of comments regarding increase/decrease of flavor... The one variable that seems to have the greatest potential to affect the "Flavor Experience" is the endless list of differing Extracts, Oils and Concentrates used to formulate the flavors.
All of these ingredients possess thier own distinct chemical properties such as boiling points, viscosity, density and thermal degredation and will react differently to the higher coil temps seen at 5V's.
For example, If your Apple flavor concentrate has a BP of 105C, a density of 1.1 and a degredation temp of 300C You will see a marked
increase in flavor at 5V because... 1. the coil reaches the BP quicker and maintains that temp longer. 2. With a moderate density, the intact molecule is readily carried to your mouth via the glycol based vapor droplets. 3. With a very high degredation temp the flavor molecule remains intact vs. being broken apart or converted into something else that doesn't have a taste or taste bad.
On the other hand your 555 flavor concentrate has the same BP and density as the apple but the molecule decomposes at 150C into something that has no flavor. Then you would notice a marked
decrease in flavor at 5V's, especially if your previous device was not capable of reaching the decomp. temp of 150C.
So, In altering only one of the properties in the example above, You end up with opposing results for the end user.
In Short.... It's probably a crap shoot as to what flavors are going to be enhanced and what ones will be deminished.
Just my 2c,
Mike