We had a crapload of Amazon courier deliveries during the Christmas season (yay NY Metro area?), but they were so shitty at it that a bunch of our orders ended up being damaged/lost/canceled and those deliveries actually took way longer. It was a almost a 50/50 chance when ordering that way. Nowadays, it's mostly back to FedEx, UPS, or USPS. I think a lot of people complained about lost and damaged packages.