I've had packages damaged by both and the USPS. Most of the times, it's how they are handled by the packers. I just bought a component from a guy before Christmas who worked for UPS and he said he would not ship until after holidays. Too many packages slammed together, too much pressure on the part time help to move boxes out, and just poor "don't give a damn" service. IMHO, I think it's a crap shoot, especially at busy periods. On the other hand, I've had very poor packing (I'm talking 5 pieces of newspaper wadded up and packed in a diaper box) and the item arrived perfect! You figure?