Hi @Ruwaid , any fused Clapton coils wil do a good job, as long as they are over about .30 ohms resistance. You will have excellent flavour, it can be 2.5 or 3.inner diameter. In my opinion this tank gives its best with a higher resistance coil at a lower wattage.Which prebuilt coils would you guys suggest? Not going to wrap my own JUST YET and wanted to know if anyone had any good flavour prebuilt coils for these awesome tanks?