Heritage breeds, like Kurobuta (Berkshire, Red Wattle, Hereford, etc), do not have the fat bred out of them like typical "supermarket" pork. You'll end up with more fat (both intramuscular, and "surface" fat), and, as Mark said, a much "porkier" taste because of it. Also, many of these heritage breeds are raised organically, sometimes with unique feeds that will impact the flavor as well...... as opposed to commodity pork, which, as far as I can tell, is raised to taste as close to neutral as possible.
I've recently had some Berkshire chops from Wild Fork Foods, and they were excellent!
Only you can decide if the cost is worth it to you, as cuts from these breeds will typically be more expensive.
Rich