The wind deflector in the R230 makes a huge difference to cabin turbulence. I won't drive my SL without the deflector in place.Two things were missing from the R230 when I bought it. The wind deflector and the Bluetooth adapter. Just bought e Bluetooth adapter on eBay for a good price. Had bought an fm transmitter for peanuts but although not bad the placement of it in the car was a problem for me as it stuck out a bit too far for me. Gona skip the wind deflector this year as rarely use it on the R129. Hopefully my bargain suspension sleeves will arrive soon.