After having my bike ripped off the roof TWICE on my own street by cable lines that had been knocked loose by garbage trucks I'm a hitch man all the way.

I went with the 1up but I use my rack all the time so it was worth the extra money too me. Plus I carry 1 bike 98.53% of the time and a single tray 1up isn't really that much more than most of the decent double racks out there. I did end up buying an add on but I waited a year or two so the cost was easier to swallow.