Forgive my possibly silly question... but I've only used HTP wicks in the past. However, my reading suggests a cotton core wick for use in 100% soy waxes. I had thought, for some reason, that CD and Cotton Core wicks were the same thing. That is until I came across Rustic Escentuals wick page that has both listed lol. So what is the difference between the two?? Editing to add: Will be ordering some 415 soon from Peak, and will be using it in glass jars - as for how I'd be using the wicks. Thanks!