I have one and love it. I take it off for winter as I have with my other vehicles to mitigate dirt build up, paint damage, etc. In February I drove to FL without it on from WI; I wished I had put it back on before the trip, as we rarely opened the roof because it is so noisy without it. I have it back on and now drive with the roof open more than not. The noise level really isn't different if the moon roof is open or shut.