I have them on all 4 of my windows. They fit perfectly and don't cause the windows to misbehave.
I bought them because the shape of the mo allows water to drop straight through the window, where it collects in the door handle. I smoke, so I have the window open all the time.
The deflectors allow me to keep the window open about 2 inches without the rain getting in, any more than that and I get flooded.
I bought them the first week I owned the car, so I can't compare wind noise or their "deflecting" ability, but the mo is still the quietest car I have ever had.
I'll take some pictures tomorrow and post em.