Fortunately for us, UPS delivers virtually all of our Amazon orders (2-3 a week since it is easier to use Prime than drive into town). The day that Amazon uses USPS for us is the day we cancel Prime, too.
The only worse delivery company we have dealt with is DHL, who Microsoft uses. I think it stands for (D)ump the package (H)aul tail away, and (L)ie that no one was home. On numerous occasions, DHL has left thousands of dollars worth in software at our gate which is on a busy country road.
A tip that I have found with delivery drivers is to be nice and get to know them. Smile, ask them how they are doing, offer them a bottle of water on a hot day, etc. Many will go out of their way to help a friendly face.