I’m sure it’s different in different locations.
FedEx was great at my workplace, before I retired.
It’s just not that good in my residence area.
Thats why its very important to know which ones are more reliable where you are. Imagine if you were a reseller and you don’t want your chosen delivery carrier damaging all your packages you are sending out. Try getting any of them to pay for shipping damamges even when you buy insurance...