They are shallow and fit well against any wall. Plus, a tabletop model will be useful because of its top. The one in the picture over on the side is a perfect example. The price is a bit steep, but it has everything you would need and is made of a nice, tough wood. I definitely recommend one with the wineglass rack.
Wineglasses are delicate.
Storing them in the kitchen and having people use them when everything else is dirty is a recipe for disaster. With a rack they will all be together and be happy as clams about it. Of course, a wine rack doesn't do everything that a wine cellar does. So there are some precautions. Most importantly, the wine is very temperature sensitive.