Can't comment on other's bikes, but I am now on 80 something K km's and have had no major issues until now. I think my stator got fried the other day, which seems to be a common fault from 50K on depending on one's luck. My head bearing also has a notch, another common fault, but I have been riding it like that for at least 30K without too much worry. I have the spare on my desk, but need to work up the pluck to change it. Other common fault is fuel pump failure, touch wood I haven't experienced this. Another fault is shitty headlight reflector, mines a bit blackened.
Is this enough to worry you. Don't be put off, it is a great bike otherwise and I am still very happy with it, just query the present owner on these mentioned issues.