I use a hitch rack out of necessity on occasion, but I'm not crazy about them. I can feel the weight when cornering much more than when I have a load on the roof.
You also have to be careful how much you load them. Most people think that if their hitch is rated for say, 500lbs, that they can put 500lbs on the hitch rack. But since a rack typically doubles the distance from the receiver's mount to the COG of the load, the moment force on the receiver mount is also doubled. So your load capacity is really only 250lbs, which would be easy to exceed.