Never had a damage issue with USPS. I have had several with UPS, as a buyer only, I'd never ever use them to ship anything to anybody. They truly live up to their name United Parcel Smashers. I'll spare you the story about the forklift holes...
That said, define "careful wrapping". If you're selling a breakable item and it's not double boxed with at least two inches of padding around all sides, it's not packaged well enough and all three carriers - USPS, UPS and Fedex - will deny an insurance claim due to improper packaging. With UPS and Fedex I believe you have to use brand new boxes, too.
The easier you are to offend the easier you are to control.
We seem to be getting closer and closer to a situation where nobody is responsible for what they did but we are all responsible for what somebody else did. - Thomas Sowell
