You could also look at the
Merlin mini. The single coil deck offers a nice range of "insert plugs" 1.5mm & 2.0mm for precision MTL airflow hitting the coil. As well as an adjustable outer AF ring. Or, you can open up that single coil deck to 4.5mm for a DL hitter.
Unfortunately, the Merlin mini is a little pricey, due to it's recent release. Probably better to "wish list" it for now. In the not too distant future it'll be under $20 like it's bigger brother.
Another versatile little RTA would me the
Goblin mini v3. Just like the Merlin mini, it includes single and dual coil decks. However, the Merlin mini has better airflow options for a MTL style vape.
You can't go wrong with the Serpent mini if you like a bigger coil and more air for a DL or slightly restricted DL hit though...
Edited on 10/31/2016 at 9:21 AM. Reason:
Living is the only thing worth dying for...