Why the name "Benedict"?

This article explores possible reasons why the new Pontiff chose the name Benedict XVI. The number one reason indicated was his admiration for Pope Benedict XV, though the article goes on to say Cardinal Ratzinger used to make an annual week-long retreat to a Benedictine monastary in Bavaria. I heard on TV that someone else (a Cardinal?) had said that Cardinal Ratzinger indicated Pope Benedict XV was the reason he chose the name.