I have been traveling a lot between PA and NYP for doctors appointments (cancer re-occurrence). Last week we missed our train to and had to get another train. The next train was a connection with Acela, which was a lot more, but we needed to get there.
First, the connection between the two trains is only around 10 minutes. If we didn't get a good red cap to help us, I am sure we would of missed our connection. It just seams a little tight.
Second, we get on the train and it is full. My wife asks, "what kind of cheap commuter train did you get us on?" She was shocked when I told her this was Amtrak's premium service and we had to pay so much more.
I have to admit, other than the speed, I don't see much advantages of Acela over the Keystone that we normally take.
The train did seam very dirty and it didn't seem like new dirt either. The cafe car had scuff marks all over the walls, the floors seamed very dirty, and just wasn't nice at all.
Also, my wife commented that the seats suck and the normal train we take is much better. I told her that you are in business class, and that is above our normal coach class.