Just put a melo coil in my atlantis for the first time yesterday. So far, with only about 4ml run through it, I'm going to say they work very well - better taste with no downside that I have come across yet - running it at 36 watts. They are ever so slightly a different size - the wicking holes are not front and center between the slots in the post, but rather deeper down in the base - I was worried when I saw this, but have had zero problems with them wicking high vg juice at the mentioned 36 watts. Can't say how they compare to the the aspire cotton coils... since they are whole lot cheaper than those linked above I am not sure I will spend the $ to see what differences, if any, there are.