Reviewing the Aprilia Tuono V4 and Ducati 1199 Panigale In Sunday's Automobiles section, Norman Mayersohn reviews the Aprilia Tuono V4 and Ducati 1199 Panigale: two Italian sportbikes priced from roughly $15,000 to $25,000 that take different paths to making MotoGP-level riding dynamics accessible to mere mortals. Of the Ducati, Mr. Mayersohn writes that the superbike is not a turnkey proposition, where everything is intuitive and reassuring. But when rider and machine reach a détente, the results are memorable: On a longer Sunday ride in the hilly farm country of western New Jersey, the Panigale and I could not come to terms. The engine always felt as if it wanted a lower gear; I did not find a rhythm, even on roads I know well. The next time out -- a Monday, with far less traffic -- it all clicked. I held the lower gears, revved the engine higher and pushed harder; the Ducati and I quit fighting. Its stability and precision, even when pushed hard, inspired confidence. The clutch pull is light, and the brakes, as staggeringly powerful as the engine's urge, added to the feel of the Ducati's sky-high limits. The Aprilia is quick, if not as brutally so as the Panigale, but Mr. Mayersohn identifies faults that are not so easy to reconcile as his quibbles with the Ducati are: Neutral is annoyingly hard to find, especially if you're already at a stop, and in one long energetic tear over back roads, the transmission developed a lurch on gearshifts that felt like a protest from the slipper clutch. In calmer riding conditions, I never felt that problem. Read the entire review, check out the slide show and share your thoughts on the Ducati 1199 Panigale and Aprilia Tuono V4 in the comments.