I'm using the Sophia by Leo. It's like the Diver V2 but supposedly better. I've switched to using them exclusively. I love, love, love them. They are a tad pricey but when I was using cartos, I was going through them like one every other day. I use the pre-made nr-r-nr wires from Stormy's Cellar and they are easy to rebuild. The difference between the Sophia and Diver V2 is the Sophia has a juice flow control. They work great in the IBTanked tanks too. And the coils last a long time. I don't dry burn on my device, I remove the bottom and use my torch to burned off the gunk, then rewick and screw the bottom back in. No juice spillage like with the Kayfun/clones. The flavor is much better than with cartos too.
