Walmart beats DHL by miles
The carrier reliability in the mountains where I live from most to least reliable:
- UPS
- USPS
- Amazon
- Walmart driver with local delivery in a 1987 Ford Escort with one or two working cylinders
- Carrier Pigeon
- Walking to a warehouse several states away barefoot
- FedEx (the dirty, smoky truck and repeated property damage is a nice touch)
- DHL