Melissa, if you're considering a hitch rack look at the Yakima Hitchfork. We have traveled thousands and thousands and thousands of miles with it with no problems. I personally like racks that use fork mounts. They just seem more stable and the Yakima locks have been bulletproof. I would never buy a rack from which you had to hang your bike from the top tube because of the paint/cables rubbing and because you can't put bikes of all different frames shapes on them. Plus we can use the Hitchfork as a workstand when we're on the road.
The Yakima roof rack with the Steelhead mounts has also been superb and done yeoman duty.
SK
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.