I can't compare to the Kato, but I have Deluxe Innovations and Walthers sets.....I've found good and bad with both. The DI set is a great runner, and very solid, but it's all plastic and all connected....because it's plastic I've had some breakage problems at the joints (during handling, not while running)...fortunately it's been a "come unglued" problem at assembly points, so it's been an easy repair . The Walthers set is metal, the first car has 2 trucks, then each car after has a single truck. The truck pins are extra long and the cars "hook" on the pin of the car in front.Always seemed a weak point to me (it doesn't look very secure) but it has never been a problem and I run my set at the front of a 20 to 30 car consist. What DID give me problems there's a plate on each car that the next car rides in (like a bearing surface) and a few of mine had some casting imperfections on them that made the cars lean to one side....a few minutes with a file fixed it , but also removed the paint...fotunately it's between the plates and doen't really show.A few of the plates aren't perfectly flat either and ossasionally a container will shift and the car will lean slightly. I also have a 5 car set by intermodal models.....It's metal and all one piece, but the cars are screwed together rather than glued, so it's been very durable My only problem has been that the pockets of the cars are very tight, and a lot of containers won't fit. I guess I still haven't found the perfect set....and I've been afraid to try the Kato based on the cost.....but if I had to choose, I'd take the Walthers set.