My adult son is in the process of getting started riding. First comes the rider safety class (good choice, IMHO) and he is doing a little looking at beginner bikes. We are wondering about the older F650's. At first look, size and weight seem OK for a new rider. Of particular interest to me is reliability and maintenance costs. How do the F650's stack up? Any chronic issues known? Any particular years or models to steer clear of? Operating cost will be a key factor for him.
Also, any subtle issues that make that family of bikes not advisable for a new rider?