It remains to be seen if there's any performance difference between the Monkey and the Grom.
As far as the Ruckus goes it's not even in the same class with any of the 125's. Possibly the most complicated carbureted motor vehicle on the planet it's so horribly slow that it's become a popular candidate to swap in a Chinese 150cc "GY6" drivetrain (a whole industry has been created to do this). I have one under construction as I write this and the Roketa 150 scooter recently given to me I'm riding this summer will serve as the donor for this transplant.
A typical Honda you can't wear a Ruckus out and folks have ridden them everywhere (but slowly). Where there is no power there is no wear...
