I have the TMCC 3751. Fantastic model. Bought it new (that's back when I used to do that). Has been flawless, though I have not run it - or the 21" K-line ATSF aluminum cars I bought for it - for several years.
RS 5.0 was great in this loco - at prototypical "highway speed" the chuffs just become a roar - as they should.
The cars are too long (15" would have made more sense, but we had a "club" layout then, so...), and I have another ATSF 4-8-4 that I have yet to upgrade to ERR - an old MTH PS-1 2900-class 4-8-4, whose PS-1 version is so old that it won't even run on MTH Z-XXXX transformers. Runs fine on my Lionel 1033, when I do that, which is never.
I prefer the (prototype) 2900-class ATSF 4-8-4's to the 3751-class, and am considering selling the 3751 and ERR-ing the 2903. I certainly want to get rid of some stuff. Dunno. I think yes, then I look at the 3751...nice - not Niagara-nice, but close.
Anyway. Rambling. The TMCC 3751 is great. But the MTH 2903 needs some ERR/TMCC/RS. Don't need both.
