Went on the test drive with the box. The wind noise increased dramtically. Also with the nose of the box just over the back quarter of the sunroof, a lot of wind gets forced down the sunroof, which is the cause of a lot of the noise. I don't consider this to be too much of an issue since I plan to have the A/C and roof closed since I will be at highway speed.
I think that no matter what box you go with you will have a lot of wind noise since wind will be forced through the small area between the box and the roofline. A more areodynamic box should be better but I still think will have this same issue. I am using this box since I have it for the Mazda MPV.
If I were buying a new box, I would look into the wider, lower height boxes that are available. But I bought this box for $220 and it has fit my needs pretty well so far.