RTA and RDAs are both types of Rebuildable drip atomizers, often abbreviated as RBAs. What's nice about rebuildable atomizers is that you can build your own coil to your desired resistance. While RBAs are generally used by more advanced users, building your own coil isn't overly complicated. Scroll down and see which atomizers work best for you, your level, and your budget!
WARNING: This product can expose you to chemicals including nicotine, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.