In the twisty stuff, the Aprilia steers the quickest, although it never felt hyperactive. The suspension consistently managed to soak up what the pavement threw its way, allowing spirited cornering on both smooth and bumpy tarmac. Though detuned from Mille duty for more midrange poop, the engine suffers from a few quirks. The Falco exhibits more than just a tendency toward cold-bloodedness. Often, several minutes of warm-up are necessary. The fuel injection mapping needs some refinement in the lower rpm range to fix some hiccups, too. Grab a handful of throttle at low rpm and the Falco chatters the chain as it struggles to overcome its tall gearing. Then there's the issue of whether the engine is derestricted or not. Although SL owners would undoubtedly uncork the air box and snip the appropriate wire, our test bike may not have been EPA legal and may have had an unfair power advantage over the other two unaltered bikes. That said, the Aprilia's engine still ranked second. The SL's styling, however, was the trendsetter.