I think depending where you live and where you order from has a lot to do with any carriers success in keeping the overnight schedules . For me ups is usually the best if I order from west coast or from southeast . FedEx use to be a good way to go but lately especially if ordering from Louisiana, alabama , Texas , Georgia , my shipments go up to Tennessee before coming back to Florida where I live witch in most cases has a delay of an extra day . The events of the past year or so between covid, and not having enough staff Im sure has a big part of the inconsistencies of the supply chain . Who knows but if you ask the people your buying from they are probably aware of which way to ship to your state from theirs that works best .