Well, I have shipped priority since they offered this service! Rules, times and guarantees have changed for sure. I don't mind paying for increases in a service or product, but not when the change the services given!
If you ship USPS priority and think UPS isn't getting your biz, they are a contracted service for USPS!
Like Killie says, she enjoys her job and probably goes the extra for folks! Good people provide great Service, no matter what it is! But the "others" in the biz implement the rules and regulations, and "handcuff" the good!