The one I have is good. Maybe 100ml-200ml per trackday, but all bikes run that hard will use a little bit. Back when it was first a street bike, I didn't notice any. Honda still won't admit it was an issue which is sad, they consider up to ~1L/1000 km acceptable before they will even consider it and even then its been a battle for those with the issue. In 09 there were a few ones here and there, but it seems to have been figured out after that. To be honest the CBR I have has been nothing short of sublime. I think the clock says 65000 without a single mechanical fault, stock motor never been opened.
The mid-range is surprisingly strong given the mileage on the motor.
Honda sold quite a few of the 08's, so keep in min the sample size. I've talked to a good number of owners, the actual % with issues seems fairly low. There are no immediate tell tale signs. I've had a great experience with the machine, and parts availability is extremely good esp. now with the 2017 coming. A small few had an issue with a whining primary gear which Honda seemed to replace with less hassle. You'll be able to hear it if its a problem, mine never had it.