John Roberts is an excellent choice--one of the best available--for the Supreme Court. He is a lawyer’s lawyer, and has the reputation for being one of the finest appellate advocates to argue before the Supreme Court. He was a fine brief writer, and has garnered a reputation as a D.C. Court of Appeals Judge for being an excellent opinion writer, authoring concise, well-reasoned decisions.
Any attempt to filibuster him should be dismissed as silliness: when they finally permitted a vote on Roberts for the court of appeals, he was confirmed by unanimous consent. If the Democrats attempt to call him an extraordinary circumstance and use the filibuster, it will show their own disengenuity, and will guarantee not only the use of the nuclear option, but public support for the nuclear option.