I would personally advise you not to buy CB9 until you get ChessBase to confirm that CB10 will not be out in a year or so. Around this time last year you could get Fritz 9 at half price because Fritz 10 was knocking on the door. CBLight and F10 should do nicely particularly as F10 has sparring and training opportunities. It also comes with free Playchess access for a year so you can also play humans to find out if your improving.
Originally posted by mcreynoldsThis it will give you in spades. I am ambivalent about the purchase because I rarely use it, and when I do use it (or opening explorer, chessgames.com, etc.) I feel like I'm not thinking and don't understand why I get into some of the positions I get into. If you have better mental discipline than I and will seriously research (more than 1 move statistics) it is worth it. If not, just use the free online resources.
Right now I am mostly interested in analyzing positions and a database with statistics.