As a registered Democrat, there are others I'd rather see on the Court than Roberts. That aside, I'm also a lawyer and find Roberts an amazingly clear and direct legal thinker and writer.
I recommend this short interesting recording to any litigator, not only for its information about the Supreme Court, but also for the insight it provides to Roberts style of thinking and communicating. I wish I could have had Roberts as a Constitutional Law professor or as a legal writing instructor.
Legal writing instructor Bryan Garner also has recordings of several of the Justices, including Roberts, at his website. I've heard Roberts there and recommend it as well.