The regional differences aren’t too surprising, except the reliability of judging ripeness by a clean stem break. That is not a reliable calibration here for me- once they reach that point they often immediately drop to the ground. Seckel is easy because you can wait for a dramatic change in color. With Harrow Sweet, you can also do this but neither of them last more than about 6 weeks in storage if picked tree-ripe. Both can get soft on the tree and still be great eating, but you will have a lot drop is you do that.