They may or may not still have the old club class 2x1 business class cars on the red-eye Regional. In the past three times that I've taken it, it was only on the train once.

Although the seats are nicer, it is slightly noisier as 1/3rd of the car is Business class, the other 2/3rds is the cafe and cafe seating, with the cafe in the middle, so you get the food prep noise.