UPS in my area (South Dakota) is terrible, way worse than FedEx or USPS. They're so bad that I will choose a different retailer if possible if the only shipping option is UPS.

UPS has repeatedly lost packages, delivered things in crushed or shredded boxes, held packages for more than a week due to "local weather" (there was no rain or snow), made it impossible to pick up packages that are being held, and damaged my trees by backing into them after delivering to a neighbor's house.

USPS is fine in the summer, but they won't come all the way up my road if there's any snow or ice on the ground, so I had to get a PO box for regular mail.

FedEx is fantastic, I have never had any problems with them.

(We don't have DHL here.)

Edit to add: my wife works for a small online retailer that ships perishable goods nationwide from a distribution center in Missouri, and they exclusively use FedEx now. They canceled their contract with UPS due the cost of lost or delayed shipments. She says their FedEx experience has been significantly better.