Hi guys. Possible first-time rider here looking at some options. To start with, is there an appreciable difference between the AT and Silver Service lines when it comes to the ride, accommodations, amenities, etc...? From what I've read so far it seems that AT might have a smoother ride and has some of the best service of all lines. I would likely be in a roomette, I saw the differences discussed between the Superline and Viewliners in the other thread. Good info to have. Thanks for any and all comments/suggestions.