I have the Yakima Whispbar (Rail Bar), which I think is the same thing -- they renamed them shortly after they purchased Whispbar. In addition to what you mention in your review, there are two advantages I really appreciate. The first is their low-profile aerodynamic construction. I have these on a Rav4 hybrid, and it is nice to be able to leave them in place without my mileage taking a significant hit. The second is the T-slot feature, which allows use with a variety of attachments without worry about them coming off. (I have a pair of Rockymounts that are also quite streamlined).