I installed factory rails (10% off from my local dealer) and what I think are the same cheap knock-off crossbars as the OP.
The factory rails were super easy to install and look great as you'd expect from an OEM part.
The cheap crossbars seem sturdy and totally functional but they were a bit of a hassle to adjust to the proper span and one of the plastic covers on the underside of the bar broke. (Maybe some JB weld will fuse it back together) It's a purely cosmetic piece so I'm not too bent out of shape over it. Such is the compromise you make when buying off-brand from eBay. But hey, 1/3 the cost of the offerings from Yakima or Thule.
I'll get my Yakima Skybox mounted this week and let you all know if my luggage ends up on the highway.
