Interesting topic. Some really strange answers though.
eGos and
mods are just
batteries. Unless you're putting your battery in your mouth they do not affect the flavor at all.
What does affect the flavor is the topper which can be tailored to provide basically the exact same flavor for any battery you put under it. Mods will allow you to adjust the power on the fly, but the end result can be equally achieved with an eGo and a properly tailored coil. Ultimately what you are trying to achieve is a topper with a coil that heats up to X temperature. How that temperature is achieved is irrelevant, you can do it by adjusting the power of the
mod or by using a coil that produces that temperature on whatever battery you use. Either way produces the same end results.
Mods don't make anything taste better, all they do is make it
easier to make changes to the operating temperature of the coil, but those changes do not
require a mod to make them.