There's still more out there, prototypes waiting to be modeled, than the over-milked
current EMD SD70 ACe's/SD70M-2's and the AC/DC GEVO's series.
Apparently, both 4 and 6 axle Alco's (the Century series); EMD's SD40-2's, their first generation SD70's, including, the powerful AC MAC's(70, 80, 90 and 9043)... are quite popular with rail fans.
Experience has shown me that I prefer using one operating system; even though I have two(DCS and TMCC). Most of my locomotive collection is MTH, so DCS equipped models makes the most sense, re: future purchases.
The models I have mentioned, in my second paragraph, have not been milked to death... like the models, in my first paragraph.
BTW, todays contrived heritage stuff, both UP's and NS's, is boring and somewhat tacky looking. I've got the UP Western Pacific SD70ACe, and that's enough of that category... for me.
I'm currently after a couple of MTH Premier models, from their 2007 catalogs, because the current models being offered... aren't doing it for me.
I'm looking for something comparable quality wise, similar to quality of MTH's new Dash 8-40CW; and their new Train Master.
One of the reasons I spoke of "Unsung power", in my opening post, is that, there must be other nice stuff out there and worthy prototypes to model; besides, the ubiquitous ACe's and GE's?
BTW, the Premier model I mentioned in my opening post of this thread, the SD40-3, is for the most part, quite well done. Lots of nice detailing, on this model. I don't like the windshield glass, though. Besides, the glass issue... a worthy O gauge/scale model.
Rick