Hmmm... There is no value for Acela - you can't check bags and how often is the train 6+ hours late?

For long distance trains, Amtrak does a good job with checked baggage. I've never heard any complaints. While delays of 6+ hours can happen, I would say the occurrence of such delays has decreased dramatically in the past year or two.

I wonder what the 24/7 travel support covers.