Best one for the Wrangler is going to be the 1up USA. Tray style racks that come in singles, doubles or quads. I've seen some guys get away without having to use hitch extenders/droppers/etc, but personally have no experience with them. Cost prohibitive where I live. I went with a Yakima Dr Tray, and it required a drop hitch adapter in order for me to be able to open the back, not ideal, but funcitonal.