I just started using Amtrak to commute from DC to Philly. I need to work on the train based on the length of my commute. Obviously, the Amtrak wifi is not sufficient, so I am looking into mobile broadband and/or mifi alternatives. My office has a verizon pamtech VZcard that I've tried out, but it loses connection multiple times starting in Baltimore and all the way to Wilmington. Does anyone have a good way to stay connected--at least most of the time, on that stretch? Thanks!