I booked coach and business-class tickets on Amtrak trains. The upgrade wasn't worth the added price.

Source: Business Insider

Business Insider's reporter booked coach and business-class seats on Amtrak trains. Joey Hadden/Business InsiderI traveled in coach and business class on Amtrak trains in the Northeast and the Pacific Northwest. The business-class seat was larger than the coach seat and came with a free beverage.