columbia 31 help
Don''t know much about the Columbia, but have owned two Tartan 30s. If the Tartan has been well maintained, you can''t go wrong with it. If it still has the Atomic four, don''t let that scare you. They are fine engines if well maintained and due to the excellent access to the engine on a Tartan 30, most of their A4s were well maintained.
Good luck in your search for a new boat