Many thanks to all of your for your help. Armed with your advice, I went surfing and found two models that met the exacting Spouse Test: the Atacama Nexus 5 (20") and the Atlantis Signature series (16" and 20"). (Multiple columns, it seems, are more tasteful than single ones.) Both are reasonably priced (115-125 USD). I went with the Atacama because the top shelf is a bit narrower across the front, but either should work nicely. Rob