I must confess, none of the four names that are still in the running for the Cubs' open managerial slot inspires me. There don't seem to be any "mystery candidates" (as you would have "mystery teams" vying for a free agent), so the Cubs appear to be considering only the following four men; here's a quick summary of their credentials.
Dave Martinez has been a coach under one of the most respected managers in the game for the last six years. He's played for both the Cubs and White Sox, so has spent a great deal of time in Chicago (part or all of seven seasons) and certainly understands Cubs culture, as well as the local media. Those are all positives; his lack of managerial experience could be viewed as a negative, or irrelevant. Every manager has to get his first job.
Manny Acta has been fired twice as a manager, and the second time there were unsubstantiated rumors that he had "lost" his clubhouse. He has quite a bit of experience as a minor-league manager, which might help him in working with young players. Like Martinez, Acta speaks Spanish, which is thought to be a criterion in this process, as there are many Spanish-speaking players in the system.
Rick Renteria is also a highly-regarded bench coach who has extensive experience as a minor-league manager. He's familiar to Jed Hoyer, who he worked for while Jed was in San Diego. Renteria, of Mexican descent, also is fluent in Spanish.
A.J. Hinch managed the Diamondbacks, but was fired in an apparent power struggle. Before his Arizona experience, he had never before coached or managed at any level in professional baseball. After he was fired in Arizona, he also worked for Jed Hoyer in San Diego. He still holds that position for the Padres: vice-president of professional scouting.
The credentials of these men seem roughly equal; two have managing experiences that didn't end well. The other two don't, but have extensive coaching experience. All but one is fluent in Spanish.
Vote in the poll for your choice. I'm going to go with Martinez here; to me, the "tie-breaker" is his knowledge of the Cubs and Chicago from his playing days here. If you think that doesn't matter, ask Dusty Baker or Lou Piniella.