When in Columbus, I shop at Weiland's. Ain't no Party Source or Liquor Barn but, for Ohio, the selection is pretty good and the staff is helpful. They are also eager to expand the bourbon supply by forwarding to the Liquor Control Gods the requests for stuff they are not allowed to stock.
Weilands is my favorite state store as well. Pretty much the best selection you will find in the state. They also have great meats for grilling, fwiw.