Go to ETrailer
and pick one out. You didn't mention what kind of trailer you will be pulling, but I would go with any of the 2" hitches because there are just more hitch accessories made in 2" as compared to the 1 1/4", although the 1 1/4" is about 22 lbs lighter if weight
is a concern.
Strange that the most expensive sez the tow hooks can't be remounted; you might want to download each of their instruction PDFs and see if the others mention it.
I like the looks of the Valley offering. It would be nice if a Liberty owner would post some pics.
You can do it yourself, as they all say "No drilling required" or you can order the hitch and get or hire someone to do it -- Not rocket science.