Most of my patients use Glide floss. While any floss is better than no floss, the plastic/teflon/PTFE/Glide stuff just glides over a lot of plaque as well. The regular floss is good but this double thick floss is actually excellent. At first you might think it doesn't fit between your teeth. Unless you have severe crowding, to the point where you have issues with your gums as a result, this will fit between your teeth, just takes a little practice.
The only way they could make it better is to infuse it with fluoride. Not adding a flavor, that's awful and gets all over your hands, just add fluoride.