I've spent 5 hours or so on this bike and have been impressed with the quality of the build, and the solid feel of the bike. I was somewhat apprehensive of the rigidity of the Step Through for a heavier person (200 lbs), but so far I've not noticed any frame flex. The design seems to be good, and the fit and finish is good.
In the short amount of time I have ridden it, my only observation is that it seems the power assist is either full on, or full off. When I want to go as slow as 4 or 5 MPH, as soon as the power kicks in it pushes up to 10 MPH, even with an intensity setting of 1. Sometimes I want to go slow on narrow trails and the power assist kicks in, it turns into a exciting ride, faster than I'm ready for. I have used the throttle on very steep inclines, and it has been great to help this old guy get up the steep hills. I've turned the max speed setting down to 15 MPH max, because I just don't need to go fast on dirt trails like a youngster.
Overall I'm happy with my purchase. The bike is still new, though, we'll see how it fares over the long term with more time on the bike.