USPS seemed fine before the last administration's Postmaster General took power and started systemic obstruction. I had cheap and easy priority mail access for whatever I needed and it went anywhere in the US within about 3 days. First Class Letters almost always arrived in the stated window. There were improvements to visibility with a daily email announcing what would be arriving for the day. Since DeJoy took over, I rarely use USPS for personal package sending because I cannot trust that the packages will arrive in the stated time period. I pay roughly 1.5x to 2x with USPS Priority costs for other services, but I don't worry that my mail will simply disappear into the void.