Precision made, Kato quality. If you buy the Kato 5 unit intermodal deep well cars, they fit perfectly in one set. By combining 2 sets you can make it a siding designed to load and unload containers. This makes operations much more realistic.
KATO is the gold standard for Model Railroad products. They and Microtrains are excellent. I will be using this for a rail/pier operation but it is useful for many scenes.
My first all Kato Unitrack Layout is still in the planning stages. These are the last track packs I needed. The ret will be more individual track pieces.