Since im 16, turning 17 shortly. I've decided upon buying a bike from the 125cc series. Now i'd like a bike in terms of power, acceleration, maintenance, top speed, fuel economy and built quality. I have come down to choosing between the Aprillia and Yahmaha, keeping in mind i am an experienced rider since i'v been riding a Honda cgi 125 back home for the last 5 years, im pretty sure i would be a sensible rider on the road. However acceleration and top speed does matter alot to me.