I'd say that the entire debate is terribly esoteric for the public even though it involves specific milepost signs that are important to astrophysicists for mapping the sun's relationship to the cold and vacuous interstellar medium.
This "exo-solar system" is an unexplored phantom frontier as intriguing to scientists as exploring the Louisiana Purchase was to Lewis and Clark.
Why not simply use a dynamical argument for defining the solar system's perimeter that is not as subject to data interpretation? This could be when Voyager 1 reaches the hypothetical Oort cloud of comets, 18,000 years from now. That's where the sun's gravitational field keeps a weak hold on primeval objects - at a distance of 6 trillion miles, or one light-year.
Beyond the Oort cloud the sun's grip eventfully grows so weak that the pull of a nearby star could capture a slow moving object into it gravitational sphere of influence.
Whatever you call solar system's edge, there doesn't seem to be a consensus among scientists. Voyager's bold entry into interstellar space may happen in the near future, or perhaps not until the year 20,000 A.D. – depending on your definition.