It definitely depends on where you are too. I live in a major city and do NOT trust USPS. I sent a very long letter to the postmaster general. I've had mail carriers leave packages on the step in a very busy city street and not even attempt to ring the door bell (I know because I was home.) I've also had them not attempt deliver because they assumed I wasn't home (again, no bell), take the package back and not even leave a slip, so I had to call the post office because I thought it was weird the package had not been delivered in a couple of weeks. Along with important documents sent with their "important document" service not being delivered on time, mail missing for weeks at a time, etc., it makes for a very poor track record.

They are only slightly more conscientious when delivering to my work address. They have a racket going where if a package arrive up to a weekend, they keep it in the sorting facility over the weekend but mark it as delivered in the tracking information. The story goes that they get paid time x1.5 if there is a large package load over a weekend.

These are only a few of my bad-to-worse experiences with USPS. I only trust UPS in this city. I've heard that its the other way around in rural areas though.

So I feel your pain, and please post information so no-one else uses this "service".