This can take hours or pages to explain in depth. 300watt mod tells me little about what atomizer is attached, are you normally lower wattage vaping (tootling) or are you into fogging it up (cloud chasing) or are you in between or are you into temperature control. See the ambiguity? Myself I started with lower powered tootling, later advanced into cloud chasing, and now reside in the middle, mostly kayfuns below 12watts most the day (single 2mm microcoil at 10wraps of 28awg nichrome), about mid-day I can change to a dual coil sub-ohm RTA at2.5mm using 26awg nichrome at 8wraps per coil, or an RDA dripper using 24awg nichrome at 6wraps each coil.
Single coil - decent flavor but highly juice efficient
Dual coil - decent flavor, decent cloud, decent juice efficiency
Triple coil - excellent flavor, decent cloud, low juice efficiency
Quad coil - nice flavor, excellent cloud, very low juice efficiency
Twisted wire - double listed above
Parallel side by side wire - like twisted wire but 1/3 plus more vapor and flavor
Basic Clapton wire (single core wire with single wrap wire) - massive flavor and vapor increase with greater juice consumption
Fused claptons (Dual core single wrap Clapton wire) -double a basic Clapton wire
Tiger wire (strand of round wire twisted with flat ribbon wire - great kayfuns RTA wire, boosts flavor and brings out the lighter tone
Hive wire - like tiger wire but really great on an RDA
Stapled claptons (dual core wrapped in ribbon wire) - double fused claptons above
Really without knowing what you are using and where you want to be not much to go on, just shooting blind her
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