In the under a pound market USPS really has no competitors, it's just so much cheaper than any other alternative. Was having a lot of problems mid-year with USPS (they lost a car title, that sucked) but they have been better lately. Most of my USPS packages have been 4-5 days for deliver for First Class mail which is about normal. I ship about 50-60 packages a week, Monday was a record for me as I had 30 in one day.