I've used both and have never had a bad experience with either, with one exception.
When I sold my NAD Masters Series components (3 cartons), shipping from Maryland to Colorado, the buyer could only accept and sign for the shipment from home, after hours, a service FedEx offers, but one which I could not do on their website (high value). When I got to the local FedEx store they clipped me for about $150 more than shipping for daytime delivery.
When I sell, my most local drop off point is my local UPS Store. If an item is valued at over $999, I am required to print off a form, meet the driver at the store and have him sign for it, no problem, as he's there from about 5:30pm for 20-30 minutes. Apparently UPS had troubles dropping off high value items at those franchised UPS Stores.
When I sold my NAD Masters Series components (3 cartons), shipping from Maryland to Colorado, the buyer could only accept and sign for the shipment from home, after hours, a service FedEx offers, but one which I could not do on their website (high value). When I got to the local FedEx store they clipped me for about $150 more than shipping for daytime delivery.
When I sell, my most local drop off point is my local UPS Store. If an item is valued at over $999, I am required to print off a form, meet the driver at the store and have him sign for it, no problem, as he's there from about 5:30pm for 20-30 minutes. Apparently UPS had troubles dropping off high value items at those franchised UPS Stores.