I had many original kfl and I currently vape a bunch of kayfun mini v3 but never bought the 5. I do know the 5 is more airy then the km3 and my reapers are pretty much the same as my km3's. So yes , I would think the reapers are tighter then the k5 without the restricted kit. I wonder though, if getting the clone, how different it will be because of the different materials? Probably wouldn't make that much difference in vaping but just in weight because the authentic is titanium and I doubt the clones would be. Also both of mine are in the nano version at 2ml, I had to purchase that because they just looked to tall in regular mode imo. They are fairly basic looking and are not top fill but they sure vape awesome and fantastic flavor. It doesn't bother me about the top fill, I actually like it the way it is, alot of my juices are in 60ml bottles or bigger and are just screw tops and I'm able to just pour in the juice. Also besides the mini kit, I purchased poly tank to replace the glass, I like it better because with the glass, in mini mode, it was easy to chip the glass tanks as they were screwed into the tank
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