Darryl, you must be a politician.

Different classes starting together is not really relevant to the question, because this is done routinely at most regattas. And, also, with the new starting procedures, you often do not know what class(es) will be starting together (or whether your class will be started alone) for any given race until the class flags go up on the committee boat.

With this in mind, if all things are equal, if all the sailors are equal sailing ability, and if you have a choice of racing one-design in a fleet of 10 boats or racing in an open-class fleet of 10 boats, which would most people choose?