Wolfie and I agree, grainger RR's rule!
Jimmy
ROUTE ROCK!
Boy, that would sure make it easy. I grew up in Buffalo, so NYC/PC, EL/N&W and C&O/B&O are my main foci (?) I did read in one of the mags years ago that to be convincing, about 80% of your rolling stock ought to be your home road. I try to stick with that with the above railroads (on my layout).
Myself from Rochester, but I lean towards - 50's - B&O, BR&P, WM