I have a Vaporz Cloud VCST 30mm. It is awesome, and since switching to RDAs it is the only one of my RTAs I will use. Awesome flavor, super easy to wick, disassembly is very quick and easy (deck is not threaded to the tank, it uses locking tabs), large velocity deck, it can be disassembled with a full tank, and I have had zero leaking even though it has Kennedy style airflow.