It's funny because I was just going through some of my old vape stuff last week and I came across 10 boxes of Boge carto's and my tanks. So of course I had to set up one and get it going again. I took out my dremel and opened the holes and on some I slotted them. No real difference between the two as they are both wicking great and I'm adding my carto's back to my rotation. It's like seeing an old friend after years and getting caught up on old times!