Slightly to totally disagree with both Skittles and Wildman, Sure those that chase clouds tend to go sub ohm, but I chase total vape satisfaction. To me total vape satisfaction is flavor, nic delivery and volume of vape inhaled to the lungs. To me the juiciness of ones juice cannot be experienced till one hits at least 15 watts, then once you are able to push it up to 20 watts or higher, it takes on a more full bodied flavor.
To get the most flavor and satisfaction out of my juice I have been playing with various twisted wire combos, M.Magic, Tiger wire even Zebra wire, and some other combos. When using twisted wire one almost has to go less than 1 ohm or suffer from vape lag. A lot too depends on the atomizer being built. Some perform better at sub ohm than standard ohm builds and vice versa. Have one rba where if you try to put a standard ohm build in it, tis a dog, but build a .3-.5 ohm coil, and it's a vape monster. Have another rba that vape quite well at both sub and standard ohms. So I will build it accordingly to which mod I use it on to get the highest watt vape that it can handle without scarifying taste and satisfaction.
It's not a simple matter of this build is better than that, so much has to do with gear capability, user skills and knowledge. Personal preference plays a big part too, wick and wire type used, juice ratios all have their influences. Personally I am no longer completely satisfied with 15 watt vape, not when I have 20, 30 and 50 watt capability, 15 watts just seems lacking.