>On-time performance. Bear in mind that these trains [Amtrak California Zephyr] run for over 2,000 miles, although they often arrive on time or perhaps half an hour late, they can sometimes arrive an hour or two late or more, so don't book any tight connections.

This needs updating. The Zephyr trains can be 8-12 or more hours late (you thought you would arrive at 14:00 but instead it's 01:00 -- this happened to me twice, once in each direction, in the middle of summer). This is just due to normal work-hours restrictions, poor management, etc. Then add in snow storms and rockslides on the tracks, and your trip might just be canceled at Denver or Salt Lake City, leaving you stranded.