bike racks

I bought a four place rack - it will really only do three comfortably. The key for me was that I needed a trailer hitch and then got a rack that had the ability to be lowered without removing the whole thing - giving me access to the back of the van. (or car or whatever).  My experience is that the trailer hitch mounted things are more stable. AND the last thing I want to do is put three or four bikes on the top of my car!