In the last couple of weeks I "learned how to use a DNA device" ... it has low watts but high volts.
I tried what most DNA users are doing... making LR range coils (1 to 2 ohms), with thinner wire to get more surface area. The thinner wire doesn't hold the heat like thick wire so less to none burning juice.
A 1.5 ohms coil at 6v is awesome; tons of vapor and great flavor... or a 1 to 1.5 ohms dual coil with tons of wraps (32g wire) twice the coil surface area and upwards of 8v.
I'm hooked. Dna's go up to like 8 or 9v even (watts stay low if you use LR coils).
Some of the new high wattage boxes have high volts, but the Raptor120w, and Ranger50w only go up to 6v max... great for sub ohms.
I took most of m RTA's to LR range and higher volts.
For dual coil drippers, like Orgen2, Magma, dual coils at .25 to .50 ohms are still great, but I gave up trying to go low with my RTA's.
Just ordered a Flask DNA40, Hana DNA40, to go with the Hana 30, and the eMech30, and got 2 Raptors, a Ranger, Sig100w (9v max), ClouporT8 150w (9v).
I didn't mean to do this, have so many regulated mods, initially I went with the high watts to go sub ohms and get away from the single batt mech tubes. But every time something new came out I couldn't resist...
The DNA40 tech is going to be a different ball game, and I can't wait to see how this thing works. I figure I already know how to make the "best" setups for the "best" vape, but the 40 eliminates dry hits with like cruise-control auto temp control.