These Atomizers give the user complete control in their vaping experience. RDAs are suggested for experienced vapers because of the building aspect of them. They come in many different styles and looks so for the person who wants to have complete control this is a great place to be at. Some of the more common build deck options are four post, two post Velocity, and Goon style build decks. Also as a bonus in this category we have RDTA's and Re-buildable Tanks. These are for the people who want to build but also do not want to have to be " re-dripping" every 20-ish pulls. You have some great juice wells and beautiful build decks in these atomizers. These pair GREAT with a regulated device and make the perfect pair with specific builds for unregulated devices.