Yes different times. I would go with Vincent as being a better boss, more in the financial department where Sonny would be a better boss in the war department imo. There is not that much on Vincent but he seemed to smarted up a lot more when he was with Michael.

"I have this Nightmare. I'm on 5th avenue watching the St. Patrick's Day parade and I have a coronary and nine thousand cops march happily over my body." Chief Sidney Green