Having shipped things all over the world, it really matters what class you ship with when you use USPS. My brother just retired from the USPS as a clerk. He always told me to ship Priority for packages and use first class if sending just an envelope- padded or flat. Only problem I have had shipping the light bezels has been a slight delay with Canada's PO when it was on strike. I have had more problems with Fedex and UPS than I ever had with USPS. It is no fun to get a phone call from a complete stranger telling you that UPS just dropped off a package at their home that YOU know has a $10,000 item in it. I was just the middleman on this but would have been liable for the cost of the item if it was lost. This has happened more than once to me with UPS
Both times my address was on the package