I've got a couple of these that I picked up from vapingzone. I liked them at first, but after I decided to shave the "lip" off of the tip so it would slide farther down inside the tube so it would be flush with the little white plug, I now love them! It solved my condensation problem. That's the only time I had any leakage. Now that the tip is flush against the plug, there's no room for vapor to condense and leak.