I own 20+ rdas and the air flow is the only thing different in all of them. The coil and wicking method is what changes things. A great coil is a great coil no matter what rda you use and how you wick it will depend on how much juice gets to the coil. I know guys that use tugboats that kill in comps. I currently use a royal hunter from the Council on Vapor (bought it because my initials are on the side) and absolutely love it. Unless someone comes up with something that is just a completely different way of vaping, drippers will remain the same.