Are they the maintenance nightmare that conventional wisdom suggests ?
To get back on this Huzo , the Tuono has been dead reliable so far but I'm early in the game with only 5,000 miles on the clock. There have been some reports of dropped exhaust valves . You really need to look after the clearances and keep the exhaust valves shimmed to the top of spec to ensure the best/longest seat contact to dissipate the heat generated . I checked mine at 3,500 miles and all are still at the top of the spec range. I will check them again at 6,000 even though the manual calls for every 12,500 miles. Many of the ones that failed were at the bottom of spec or at 0 so no surprise when things go bang. I did have a recall on the rear brake master cylinder which Aprilia took care of even after warranty. I don't expect any major issues as I don't put serious miles on the bike and tend to obsess over maintance. If it were to be my only road bike I would say to go with the last generation 2cyl. tuono with the rotax mill. many examples out there approaching 200,000 miles and still running strong. Over all, there are few catastrophic failure reports considering the number of units out there. I would chalk them up to poor or non existing servicing, as well as insufficient cooling from lugging around town on a race bred motor. The level of handling , performance and electronics package in these bikes really makes them a bargain for what Aprilia lists them for compared to some competitors. S1000r / v4 duc. KTM ect. I am considering taking a look at the new liquid cooled goose to replace it when they arrive as the Tuono is really a little too much useable power for the street. But you could say that about any liter bike .
So in short, no maintance nightmares .....yet( fingers crossed)