Thanks for the info.I am 70 years old so top speed in not what I am looking for,but a bit more acceleration would be better.I think the lighter rollers is the way to go.By the way I have in the last few years owned a Vespa 250 GTS, Derbi GT 250, Piaggio X8 250,and a Gilera runner ST200.The best of these was the Gilera,it was fast and handled like a motorbike.The Cygnus I have now suits at my age as it is nippy and lightweight. Ride safe you all!!! JOHN