I can't speak to how well the Atlantis V2 performs, but I doubt a DNA 30 device is capable of pushing enough power to meet the potential of a .3Ω or .5Ω coil. It may work with the 1.0Ω coils.
I can only give you a recommendation based on the gear that I own myself.
I love my Sigelei 150w, they can be had for around 90$.