Sorry I am bad person to ask. I don't know, because I am still using the ones that came with my kit. In the kit is 2 cartomizers and one atomizer. But honestly, right now I am using another cartomizer and didn't try the atty ( from the kit) yet. I don't even know exactly what it is, since I have a big box of caromizers all mixed hehe.... It is better to go to the VMod thread where the people can really help with your questions, regarding which is the best atomizer etc.
In my case any LR cartomizer is OK for me

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