One of my local train stores is selling 3 used ES44AC engines. I don't have a wide-nose diesel on my layout and I feel this is a nice opportunity to get one. Each engine is the G.E. Demonstrator model with the green LED side lights and each one has Proto-Sound 3. One is Premier (here), the other two are Railking Imperial (here and here).
My questions are:
1. What (if any) are the differences between the two Imperial models listed here. One is being sold for $75 less than the other, so I assume there must be some kind of advantage one has over the other.
2. Other than the realistic proportions, (an extra 2.5 inches longer) what are the advantages of the Premier model? The description claims it requires O-42 to operate, but since the next radius down on MTH track is O-31, would this engine navigate Atlas O-36 track?
3. The "Blind" inside axles on the Imperial versions of these engines look terrible and is the main reason I would prefer to go with the Premier version if possible. Can those inside axles be swapped to a proper flanged wheel in some way?
4. The Imperial versions seem to only come equipped with single pickup rollers, instead of the double rollers present on the Premier model. 2 rollers do not preform nearly as well as 4, so is it possible to replace the rollers on this engine with MTH's double roller?
If anyone has input on this, or if any of you out there own one of these engines, I'd love to hear your experiences and suggestions.
Thanks!