Definitely, less drag and less weight. The Ozone Race lines built from SK99 dyneema are great, not so thin to be fragile but great for foiling.
Absolutely. I stocked up on a few sets of Ozone 200/100kg back when they still made them. If they all wear out I'll grudgingly go to the current Ozone 300/200 race lines but for riding with minimal kite size I'm finding the 200/100s last ages and perform sooooo much better than regular lines. Bring back the 200/100s please Ozone!