Hello vapernauts, I have a question for people. I've been using ni200 coilheads in my s.o. tanks for a bit now with TC. I've noticed that their lifetime is generally only about half that of kanthal coilheads. Granted, the only brand I have used are UD for the Zephyrus, so this could be an issue with a single manufacturer. Anyway, has anyone else noticed a shortened lifespan with prebuilt ni200 coils?