A very reliable bike. I replaced all the consumables - tires, brake pads, brake fluids, coolant, oil, fork oil, fork seals - immediately upon purchase. Apart from said sidestand switch malfunction, there were no problems at all with the bike.
It fulfilled its purpose as a practical commuter bike that can do the occasional long-range tours. A full tank can net you 380km before needing to switch into reserve. Maybe 290km if you treat the throttle like an on-off switch, and wind out the gears.
It's no racing bike, but handling is good, and will provide fun times in the twisties if fitted with the proper tires. Only the rear preload is adjustable, and ground clearance is limited compared to the race-reps, but then this is a touring bike.
Accelaration... not much. It is a 250 four-stroke after all. Given the fuel economy vs performance and maintainance costs, I can't complain.
AFAIK, only the rocker arm had been replaced since the engine came out of the factory, and it still managed 165kph (indicated) in one kilometre (14t front 47t rear, around 12k rpms). However, you should plan your passes, don't expect the throttle response of a 600, or even a 500.
The front brake is a little unnerving when wet though. Perhaps aftermarket pads are in order?