Depends on the day.
I have bi-level commuters, Superliners, and smoothsides and a P42 in Amtrak paint (Ph II,III,and IV) and a Dash 8 in Amtrak Ca paint.
Somedays its a modern CZ (6-9 cars), Captitol Corridor (3 bi-levels, yes I know not correct, but I haven't got the money for Look Model cars. They will eventually end up BNSF business cars.) or an early "mixed bag" with a UP E8 up front and the smoothsides with Super Chief, El Cap, and/or CZ cars (6-10 cars).
I may get a set of the AmFleets for the Pacific Surfliner to San Luis Obisbo (typically a baggage, three coaches, diner/cafe car, and sometimes a Big Dome, powered by P42s or Dash 8s and a cabbage on the end)