I only have two microace electrics so far and no steamers, but from these two, the Katos are much better running on the average. The first one required a motor transplant from the git go and is still a bit noisy. The second one runs much better, but I did do a lot of checking for reviews that did not have muzak playing while they were running the train to try to hear how they ran.
Now Kato isn't perfect either as anyone with an NW2 probably knows. These are noisier than heck and I spent some time yesterday trying to get them to quiet down. My ABe 8/12 required a motor replacement to a slotless motor before it quieted down. That may be what the NW2 requires, but I don't want to deal with that gear drive system that I heard splits over time.
Microaces are also more expensive on average and don't seem to have the finesse that the Katos have, but they do offer some unique models. Am eyeballing this one and am waiting for a recent review of it. You can see how cheap the undercarriage looks, but the motion is so mesmerizing to me.
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