Before we started testing, we had all six of these cargo boxes laid out side-by-side in a garage. It was pretty readily apparent that our two $300 boxes, the ones we've deemed the "short and stumpy," were considerably less nice than the other four. What we were the most curious about, then, was what was going to separate a $500 box from a $700 box. At first glance they seemed really similar, so we couldn't quite figure out what the secret of the top-of-the-line boxes was, but we were determined to find out.
We've awarded the Yakima SkyBox Carbonite our Best Buy Award because we feel that it is only a hair off our Editors' Choice Award winner, the Thule Motion XT. This decision can almost singularly be narrowed down to the mounting systems. As far as value goes, we felt that the more expensive Thule box was better than the mid-range one, the Thule Force, but we genuinely like this mid-range Yakima box much more than its more expensive brother, the Yakima ShowCase. The SkyBox scored highly across the board: we love its sleek, easy-to-use handle; matte black finish; and sturdy construction.