Is it worth it to upgrade to Business Class when traveling on Amtrak?

The description they provide of Business and Coach are a bit sketchy-though the price difference isn't huge, I will riding for 12 hours and want to be comfortable. Or, am I better off getting the cheap seat and spending the rest of the $ on cocktails, which will also help beat the boredom?!

Go Business class!

The seat is bigger and the area can be less crowded. If you are traveling for 12 hours - get the business class.