So far I would say the Kanger T3 is on top at the moment. It is what I use etc...I will say that for me to love them I have to do a little tinkering with them. First I found out that I need to clean them before filling. There was a strange off taste when I didn't clean it first. I'm sure it would go away with time, but I don't personally want to inhale it. Also they come with 2 flavor wicks on top of the coil so depending on the thickness of your
juice you might need to remove one of these or both. They are easy to remove or replace so it is not a big deal. When they just don't seem to be getting to where I want them I have flipped the silicone piece (it sits right on top of the wicks) over and have had good results at times for sure. With a little tinkering these have been quite good. Best taste and performance in a clearomizer that I have came accross since starting back in 09. Good luck!