Phil says the ceramic coils with the airflow dialed way down is a good MTL. There is a vertical clapton that they are calling the traditional coil. He didn't mention those for MTL but said they are a quite good DL. They are also working on more versions of the coils to come out in the near future. Maybe they will have a dedicated MTL coil. The coils are also very cheap. Almost as cheap as the Bachelor coils. A 10 pack of ceramic ones for $18 and the traditional ones for $16.Are these Vaporesso Estoc tanks DL or MTL?