I stopped by forum sponsor @Berwyns Toys and Trains this morning to pick up some paint. I noticed all of their custom run MTH Premier USRA Pacifics had come in. The most visually impressive, to me, is the Burlington version. MTH did a great job adding details the USRA tooling to more closely represent the Burlington prototype. They also have Milwaukee Road, Chicago and Northwestern, and Rock Island versions available.
The whistle steam on this model is impressive. MTH routed it through the whistle itself.
I also got them to run a couple of the custom run Premier diesels they just got in. Here's their exclusive Burlington Northern F3 and Great Northern SD9.
They have a bunch of other cool early 70s Premier diesels that just arrived, including Illinois Central Gulf F3s and Burlington Northern SD9s. Stop by or order these models from Berwyn's website (https://berwynstoytrains.com/). I'd probably have taken all these models home with me if I wouldn't have gone broke 😄.