If we’re talking scale, I really like
Weaver’s 40’ PS-1.
MTH Premier 40’ And especially 50’ High Cubes
Lionel can really be a toss-up depending on the car, same with MTH railking
I saw a beautiful C&O Gondola for a bargain at a local train shop so I bought it- turns out It was Atlas, and it is an amazing looking piece of rolling stock. Intricately detailed, very well made- Atlas is known for this. If it carries over to their box cars- then go for an Atlas.