I began with a Ego and picked up a Riva.
I noticed an immediate difference in the amount of draw. The Riva was so much easier to draw on no matter what I used. (Atomizer or Cartomizer).
The 4 notches on the end of the Riva appear larger and allow more air flow compared to the Ego.
I am still using the same 2 750mAh that I started with last November and my Riva is in my hand pretty much all day.
I noticed an immediate difference in the amount of draw. The Riva was so much easier to draw on no matter what I used. (Atomizer or Cartomizer).
The 4 notches on the end of the Riva appear larger and allow more air flow compared to the Ego.
I am still using the same 2 750mAh that I started with last November and my Riva is in my hand pretty much all day.