Hi David,
The DCT Pro Coil functions much like a bottom coil clearomizer. Rather than having polyphill that requires priming, the DCT Pro Coil has bottom coil and wick. It will certainly be an upgrade in convenience. Flavor, of course, is subjective, but as you can see from the reviews, they've received a great response. The resistance you should use will depend on the voltage, but if you're using 1.5 ohm cartomizers, I recommend the 1.8 ohm DCT Pro Coils. As an example, if you were running the 1.5 ohm cartomizers at 4 volts, your net power would be 10.67 watts. To achieve the same power with the 1.8 ohm DCT Pro Coils, turn the voltage up to 4.4.
Thank you,
Brad