Can you give us more information about what you are looking for? I'm gathering that, from what you did say, you want replaceable coils. First, the coil life is difficult to determine since it is effected by the amount you vape, wattage you vape, e-
juice you use, and type of coil. Personally, I don't use premade coils. I do prefer mesh coils or flat wire coils. I do have a SMOK subohm Prince
tank and a Big Baby with a bubble tank that I have mesh coils for. I've heard really good things about the Mesh Pro.