FedEx lost the paperwork I overnighted to try and get my dog unstuck from customs during an international (California to EU) move and gave me the runaround for 3 days telling me "it'll be delivered tomorrow!"

UPS got it there in under 24h.

Weeks later I got a "your package was delivered!" email from FedEx. Fantastic stuff.

Needless to say I'm never proactively choosing them again.