To illustrate the MTH portion of MUEagles list
MTH
MRL SD70 ACE
MRL FP45 (RK Scale)
MRL SD45
MRL Premier Hi-Cubes
MRL Premier 3 Bay Centerflow
MRL Premier Tank Car
MRL Premier PS-2 Hopper
MRL Premier EV Caboose
20-2827 SD70ACe from 2007 Vol. 2
30-2908 Rail King Scale FP45 from 2009 Vol. 1
20-20099 SD45 from 2011 Vol. 2
20-93359 50 foot High Cube box car from 2007 Vol. 1
20-97428 ACF 3 bay Centerflow covered hopper from 2002 Vol. 2
20-96197 Premier tank car from 2010 Vol. 1
Andrew has already posted a photo of the 20-97298 2003 cubic foot PS-2 covered hopper from 2012 Vol. 2
20-91249 Extended vision caboose from 2008 Vol. 1
Plus MTH has made the 20-98757 gondola with pipe load from 2010 Vol. 2
and the 20-98661 bulkhead flat car from 2008 Vol. 2
The SD70ACe and SD45 have been made in 3rail and 2 rail versions. An MTH SD35 offered in 3 rail and 2 rail with Proto3 would be most welcome.