Carlos has the most potential greatness of any player in MLB. Harnessing it to the point of easily winning 20 games a year is something the Cubs may never see. Hard to explain about the intangibles, but would'nt hesitate to say he would win Cy Young awards with proper coaching and solid team play. Cripes at times he was the offensive star in the games he pitched. Many games he threw an extra 30 pitches due to shoddy defense behind. Prior is a different story. In 03 he looked like he could cruise through many starts with pinpoint control, could spot the ball where he needed to. Have not seen that in past two years very often. He has had injuries, just not as sure that we will see that Mark Prior again, for whatever reason it's not as simple for him anymore. I believe I would take my chances with the future of Z depending on how good of conditioning (weight) he will maintain for the next ten years.