Kanthal A-1 wire is known to be the prefered type of heating wire for rebuildable atomizers. Kanthal is recognized for it’s performance which brings out the complexity of the flavors in the e-liquid it vaporizes.
Kanthal flat ribbon wires produces more vapor due to the greater surface area per volume than traditional round wire, which is the same reason why our stove in our homes have flat tops. The advantage to flat wire is simply that there is a greater contact area between the heating source and the source being heated. Flat wire is also known to eliminate hot spots in your coil which will require less adjustments to the coil once it is wrapped.