I have heard the same thing from some, others didn't notice a difference. It's definitely worth a try if you have both types of coil heads.I heard if you use the evod coils on the protank it gives a less airy draw to it. I ordered 2 evods and a pack of atomizers and own 2 protanks so I'll see if that's true or not. I did get used to the airy draw though and am enjoying it much more now![]()