Well if i had to pic only a Kayfun it would be one I do not have. The Black edition kayfun lite Plus. It's not black but called the black edition. But My favorite Kayfun type is the Fogger V4 and Aqua. The Fogger and Aqua are made to be able to do dual
coils easier. Never had one leak or flood when built close to how it's suppose to. Can't say that about the kayfuns. Especially the old 3.1s were it was better to top fill them. The only bad thing about the Aqua is that it comes with a ss
tank and the after market clear
tanks are hard to put on it. IME.