Well, based on my approx 2 weeks vaping the ego-c before I got my Evic and then transition to vamo v2 about 3 weeks after that. The memories are somewhat dimmed but here goes.
The days of having to push the button on the ego and count 1, 2, vape at the dimming ego batt are gone. The flavor is much more consistent. Burnt hits don't happen except for when you are tweaking the power up in search of the juice sweet spot. Once you've found that sweet spot the next time you'll be changing it is when the atomizer coil starts cruding over or your battery is ready for a charge. Using 2.5 ohm coils also helps with flavor to my taste, always used 1.8 ohm with the ego.
OBTW get some replacement atomizer heads for your PT. Clean ones vape so much better.