What rack manufacturer is that on the white LR4? I'm still not totally sold on any of them yet looks wise, except maybe the flat one from Urban Offroad but the one on the white one doesn't look too bad. How is it for wind noise and mpg loss?
That is my LR4 and it's from Derek at Urban Offroad. Since I have the black-design package, he offers racks that fit the full-length roof rails (or half-rails if needed). I had a great experience working with Derek, his racks are extremely well built and sturdy. His shop is out of Oakhurst, CA, so he offers free installation. I had a 2011 LR4 with a Voyager rack, which was nice because it bolts directly to the truck - no need for roof rails - but it certainly was not as durable and strong as the rack from Urban Offroad.
There is definitely some wind noise, but you get that with any rack. It doesn't help that I have large Pelican boxes up there and my Hi Lift jack, though even without them and the rack alone, there is still wind noise. It is not a whistling noise like on some racks, just wind. Derek does offer two types of wind fairings that he can integrate onto the rack, and supposedly that cuts down the wind noise drastically. I opted out of the wind fairing because I plan to install a light bar. As for loss of MPGs, yes, it went down slightly, but not too bad. At this point I can't really complain with my rack, AT tires, skid plates, sliders, etc.
The other option you may have is the Baja rack, which fits on the half rails. I really like the design and it has the built-in wind fairing, but I have heard it also has some wind noise. A few LR3 guys I know on here have it and I really like the look.
Let me know if you have any other questions. Here are a few photos before I put the chicken coop flooring and all the crap on the roof: