One thing I'd take into consideration if you're going to be buying premade coils here and are planning to use them with SS mesh, is the diameter of the wick hole. The wick hole's diameter determines the size of the wick, and the size of the wick determines the diameter of the coil you'll be using. Also, the coil needs to be fairly snug on the wick for proper contact and possibly eliminate hot spots. The diameter of the premade coils here might make it abit more challenging since most wick holes slightly vary in size. Then again, you can always pull on the ends of the premade coils to tighten it up on the SS mesh wick.
I'd rather get the premade uncoiled NR-R-NR wires here, that way you atleast know what the resistance of your atomizer will be.
I am the $0.01 fairy.