Yakima HighRoller Upright Bike Mount
I like this rooftop mount. It is fairly easy to load, you can easily lock the frame of your bike to the rack, and I feel it is safe and secure. I would want the design improved before I purchased another however or I would look at the Thule Sidearm. First, the bikes sway quite a bit when using this rack. Although I have gotten over my nervousness in this regard while cruising on the highway, it is still a bit unsettling to see two bikes (I have two of these mounted on my Subaru's factory racks) worth more than my car swaying quite dramatically in the wind. Granted there have never been any issues with the bikes coming off or even getting loose, I would still prefer a more rigid upright setup. I have been able to overcome this design flaw by locking two bikes together (frame to frame) which cuts down on bike movement by about 90%. My next suggestion to Yakima to improve this rack is to make a locking system from the bike rooftop rack to the car's factory/Thule/Yakima/etc. rack. Basically you can lock the bike to the HighRoller (which I like), but you cannot lock the HighRoller to the car's rack (which I don't like).
I have used these racks quite a bit and traveled as long as 7 hours each way on an 80 MPH highway with bikes on top and never had any real problems to speak of. Overall, I would give this rack 4 out of 5 stars, but it could definitely use a bit improvement.