hehehehe ...you guys are awesome .....yes the GM E and F series are cool you have to love the round nose and round portal windows.
the first train set i ever had was a Bachmann with a warbonet F9 ....i never had any E-series anything in model form i think the only difference between the Eand F series(at least what i noticed) is that the F-series are shorter with 4 wheels per truck and the E-series were bigger road engines with 6 wheels per truck.....
if this theory of difference holds true then the Alcos had the same product lines which makes sense as competitors
The PA series would be competiton for the GM E-series and FA series would be parralleled with the GM F-series.
i have always had a softer spot for the ALCO with its more stodgy nose and seemingly lower roof line
hehehehe as said before ...thanks for this thread
BTW my favorite road of all time is actually the Rock Island LOL