RS50 - if you really must spend the thick end of two grand on a 50cc bike then this is one of the best about, hard to classify as its not a true moped but its hardly a sportsbike so we'll invent a category called 'sports hairdryers', once de-restricted it'll hit 65mph and has handling and braking that are capable of handling far more than this engine can throw at it. 90%

RS125 - now that the RS250 has been killed off due to EU legislation on emissions this is the closest thing you can get to a full on race bike for the road, the tiny powerband ensures you have to work to get the best out of it but when you get it right its one of the best bikes ever made and probably the best handling, 33bhp when de-restricted doesn't sound a lot but the bike only weighs 128kg = pocket rocket. 93%
RS250 - Now were getting somewhere, before it was banned for being to harmful to the environment at the end of 2002 this was the ultimate race replica, the engine is a 249cc v-twin 2 stroke that comes from Suzuki's RGV250, nothing else was as close to having that racer for the road feeling about it, it chews pistons, needs the best oils and expensive rebuilds but its probably the most involving and rewarding bike you will ever ride 95%

RSV1000 - people weren't to sure what to expect of the new 1000cc sports offering from Aprilia who up until then only made 2 strokes and a Pegaso 650 but the bike got rave reviews from the press, in there first attempt at making a big bore superbike Aprilia had succeeded I producing a bike that would take the fight to ducati on the racetrack, the RSV is a physically big bike so smaller riders will have difficulty on it at low speeds but it's a good chunk cheaper than a ducati, more reliable and its rarer , there is also a higher spec version called the RSV-R which is the same as the stock bike but with ohlins forks , shock and steering damper and ultra-trick O.Z racing wheels for even better handling , be sure to keep it clean though as the graphics tend to peel off very easily and are seriously pricey (just ask Paul) 88%