Hi guys,  Forgive me for my lack of knowledge when it comes to this stuff. I have been golfing for a long time, however, only in the past year or so have I really started working on my game.  My father in law gave me some of his old clubs last year, and now, I am in a situation where I could probably afford some of my own.  The clubs he game me are Titleist  DCI 990. I know they are old, but I know also that they were not so bad back in the day. So, really my...