It's been a long time since I used factory coil heads. It was nice to be able to pop in a new coil in 30 seconds, but it was expensive. What made me start to vape RTAs and RDAs was the coil life, replaceable wick, and the low cost that it lent to vaping in general. I used to go through a 5 pack of coils per week. They were gunking up and losing flavor in a couple of days or less. That, and the Kanger Protank heads that popped the solder legs before they changed to a wire weld between the resistance and NR sections.
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