RS125: Closest you're gonna get to a 125 gp bike on the road. Fucking fast considering the engine internals, reliable despite what everyone says. Only problem is that they can seize fairly easily, as can all 2 strokes, and the parts are fairly pricey. Plus the speedo system is a right bastard, and you'll get through a lot of cables and drives. For an interesting bike go for a tzr125 or a gilera sp01/2

Aprilia Rs 125