The "perfect vape" is dependent on YOUR tastes. Not a chart. I agree with Completely, wicking is important. Right now with my juice, in my temperature, I'm running 1.4ohm micro coil (28gauge single coil) with cotton in a kayfun @12w on the Cana and it's a very nice vape. I run a 0.8ohm dual coil gaia w cotton at 20-22w and is pretty good. What are you wicking with? If you can tighten your draw a bit, creates more vacuum sucking more juice to your coil.