The windshield wiper blades are a particularly wretched annoyance on my '96SL2. The last time I changed them I used refills from Canadian Tire. The blades would squeak like mad if they had less than a full load of water, and at the end of the stroke they'd turn over and spatter the area just wiped.
Well, thought I'd give the Teflon wipers a try. Took a few weeks for Canadian Tire to replenish their stock, but I finally got a 21" and 22" together. The results are excellent; they're as smooth as butter! Sure is nice to have quiet wipers.
Drawback is price, and I don't know how long they will last. Making the rubber compound softer will make them quieter and likely faster wearing. For now I'm impressed.