i see it more as a why limit yourself to one voltage thing..a 5V specific
device just seems so limited..and a limited range of atties cartos...
with a variable voltage mod or even a 3.7V/6V device...your battery options, votage options, and atty options opens way up....way more to find what suits you and your mood ..
if I wanted to stick myself with a 5V only device...I'd just get a PT at less than a third of the cost..