A: Hi Rodney,
We're glad to help! The Replacement Dual Coil Head for Smok T-Dux will produce more vapor than the Replacement Single Coil Head for Smok T-Dux. Beyond that, they will perform similarly, and personal preference will dictate which a given person prefers. We have also noticed that the Replacement Single Coil Head for Smok T-Dux are easier to acquire. It may be worth ordering a 5-pack to see how you like them, Rodney.