I have always had good luck with USPS. Never any problems, that is all I use anymore. The only problem I have had with UPS is the drop off. I live out in the sticks. Maybe they just get annoyed at my 1.5 mile dirt driveway, but I have had many a package dropped off by my porch and one time leaned against my wifes' car. No nock, no horn, nothing. I just happed to walk outside and noice the corner of a package against the rear bumper of my wifes car. She could have backed over it without seeing it. Just careless.
I live in an area where most folks know each other. My USPS lady, calls me to tell my I have another bow and then drops it off IN MY HANDS. How is that for service? USPS all the way now.