I have a Gobi rack w/ladder.
- With the sunroof closed the noise increase was minimal and really only noticeable at highway speeds.
- With the sunroof shade closed, you can barely hear it at all.
- With the sunroof open, its definitely not as pleasant as it used to be, especially with the sunroof insert in. For me, it's still bearable especially if I'm not on the highway.
- After I got my lights on, definitely makes a lot of noise with the sunroof open, it's loud. With the sunroof closed, it's tolerable for me. With the sunroof and shade closed, its not bad.
so there you have it - good luck with my totally relative and non-empirical answer :keyboard: