The couplers don't deflect to the side when shoving on straight track the way MTL usually do. That's a plus. They definitely look more realistic but still not really prototypical, mainly because they're still oversize.
One of mine did not roll well and I've yet to figure out why. A second was doing a weird tilt to the side when going to into the curves, and I figured out it was the trainline hose details having too low and carching the outside rail. The third one was good, so far as I've looked. I haven't check the wheel guage but I will soon.