I prefer 30ga Kanthal, 4/5 wrap to approx. 1.7Ω on 1/8" porous ceramic wicks. That's my sweet spot.
Also, I have noticed when tank air intake is restricted, the flavor of the juice gets a little muted. Same with a dying, defective or inadequate battery, and why I stick with AW IMR ones. If you are losing flavor with 30ga Kanthal, it may be one of these factors.