We do not consider that one form of engagement is better than another but rather that each form of engagement has their merits and ways in which they can be useful.
We may consider that a meeting with board directors or senior management is the best way to address the objectives of an engagement or similarly we might consider that a written letter or e mail to the company could be a good initial step to initialise a conversation.
Should a course of engagement not meet our desired expectation or outcomes, we may consider escalating, for instance if the response to a letter written does not meet the desired outcome, we may consider setting up a meeting with the board or senior management.