I’ve tried all three, and FedEx is definitely the fastest. You walk in, they handle everything, and you get a confirmation in seconds. It’s a little pricier than the others, but it’s worth it for time-sensitive stuff. I first read about the different fax speeds on https://psgolfcourses.com/ , which gave me a good idea of what to expect. Office Depot is also solid if you’re not in a huge rush — great balance between price and convenience.