IMO, I think Meyer was better than Mora, Caldwell, Chuck, or Frank. Caldwell got us to a SB but he had Peyton and that was really Dungy's team. Chuck basically rode Luck's coattails to a respectable W/L record. Frank was average. Meyer was a hardnosed coach and the players always gave him 100%. Meyer was also against the FO trading up to get Jeff George. Nobody would listen to him; he said it would ruin the team and it did. Meyer and George didn't click at all and when Meyer started 0-5 in 1991, he said adios.
I listed my Top 3, I will extend it and go Top 5.
1. Dungy - 2006 SB Champion. Regular Season record was 85-27.
2. Marchibroda - The 1995 season stands out. 1 play away from the SB.
3. Meyer - The 1987 season stands out. We won the AFC East when the Pats, Dolphins, and Bills were all good.
4. Caldwell - 2009 was impressive (we got to the SB) even though it was Dungy's team.
5. Mora - His 1999 season was impressive. At the time the Colts recorded the most wins in a Regular Season at 13-3 here in Indianapolis.