I've owned an early-production S1000RR since 2010. Both handlebar switch clusters were replaced under recall, but otherwise, it's been flawless. I've generally owned a sportbike through my entire riding career and this is by far the best. The motor is very strong, but very refined.
I don't think the S1000RR is quite the slam dunk it used to be. The competition has raised their game so I'd certainly would look at several bikes if you're in the market. If it was to buy one today, I'd get the S1000XR and get 95% of the performance, but in a much more comfortable package.
- Mark