My advice to quote Dr. Sydney Freedman, "pull down your pants and slide on the ice". Buy what you like. Lionel has given us a pretty good selection of options. Not everyone will like them but that's why we get to chose what we buy. For me I have the locomotive that I want so it will be the newly tolled observation car which I suspect is the same length as the current, maybe a smidgen more to accommodate the new observation platform.
The Blue PE Berk is nice but the red doesn't do it for me. All in all if I didn't already have a scale Berk the classic black would be my choice. Good thread @Paul Kallus