So many combinations and permutations: ejuice, battery device, RDA, wire type size, wicking material. Which adds to the enjoyment of experimentation. Easy to start at lower wattage setting and work higher until - OH! That's It!
One of my favorites, most everyone's is different, for MVP 2 (or SVD or 134), IGO-L and my juice: 1.5 ohm micro coil, 11 wraps, kanthal 28 gauge, peaches and cream cotton yarn (walmart) at 8 watts.
Same build and wattage when I use my kayfun 3.1 or kayfun lite: wicking material change to cotton yarn inside of ekowool. Just seems to work better for me with RTAs. Plan to try readyXwick (RBAsupplies) when it arrives.