My carry Colts. Top to bottom: 1953 Detective Special, 1955 Agent (1st yr. production), 1964 Cobra.
The Agent gets carried the most, the D.S. the least. I recently acquired a 96% condition 1952 Cobra (my birth year) but it's just too nice to carry.
This time of year I usually carry a Mod 640, a 1957 Mod 38, or the Agent in a front pocket holster in cargo style shorts. Too hot for IWB.