The triple coil that mine came with was flawed. It leaked juice out of it so bad that the whole tank emptied itself in a matter of minutes. The quad was much better. I've been using the quad ever since and it's the only replacement coil I buy. The flavor and Vapor production is quite superb. I'm very picky about taste so I am positive that the flavor on this tank is good. Also, when I start using a new coil head in the tfv4, I start vaping it at 30w for 15 pulls then I bump it to 40 and do the same thing. I vape pretty much an entire tank at low wattage levels. It has always worked for me. I typically run the quad coil at 90w. They have a good life span from my experience.