since this one has an upgraded motor, from the original 500 watts to 750 watts, I would suspect the power increase is noticeable, it also got an upgraded battery, they rate at "70" miles... not sure which of the 4 speed / power modes they rate "70" at, but would suspect that is with minimum mechanical assistance???
Monday she'll be putting some miles on it, in the large warehouse building, that I've been prepping for a new customer... I'm hoping some of her e-bike freinds will stop by and help her with any kinks, as she rides it for the 1st time...