I did not order from Gobi directly either but they will install for free either way and not charge you shipping. You should definitely take them up on this.
As far as wind noise, yes there is some. Is it noticeable? for the first few weeks it is but then it just sounds like normal road noise. I can't tell the difference anymore. I actually get more wind noise from the side mirrors whistling than the rack itself. I have the stealth.
I believe Jake has the Baja (don't quote me) but said they are a lot more prone to damage and what not while standing on top. The Gobi rack is by far the best quality of rack you can buy and it looks better.
