FWIW, i have  recieved over  100 parcels in the 3 years i have been open for
business. Of those, UPS has managed to break/damage 21 out of 37 breakable
items, out of 45 total. USPS has damaged 4 out of 35 breakables, out of 49
total. Fedex broke 2 out of 4 breakables, out of 12 total.
    I do my best never to use UPS. Some of the items recieved were so
destroyed they look like they were run over by a truck.It is a major
aggravation to get your money back from UPS.
    Out of the 28 parcels i have sent out this past year via USPS, none were
damaged at all. I pack very carefully! - Ed