A veteran sports columnist at the Denver Post, Jim Armstrong alternates with fellow Post-er Mark Kiszla on The Press Box, a morning-drive show helmed by recent import Tim Neverett. Armstrong doesn't have a typical radio voice, but he's turned out to be an excellent communicator, presenting thoughtful, well-reasoned arguments with a minimum of pomposity or ego and a maximum of humor. A year ago, Armstrong briefly considered ditching sports for news, then reconsidered. His work on 560's morning shift demonstrates that he made the right choice.