ducati's are sick bikes when it comes to speed for their cc class, and they have always been known to have great balance in the corner. BUT just like clint said they need valve adjustments so often its ridiculous, the oil changed every 2,000, they are very costly to get serviced, and i bet the ducati dealership is not cheap! the ninja 636 is a badass bike for a 600, prolly the fastest 600 i've ever ridden, good low acceleration, good top end, balance point for cat-walks is only about 10:45. Just one thing, ninja's are notorious for having twitchy steering, easy to get into a tank slap, spend the $290 and get a steering dampner