Welcome to the forums. I now own my second Diamond and they are a top notch bow. That said I would highly advise you to get out and shoot as many different bows as you can before you buy. Whats right for one guy might not be right for you. Please at least make a trip to a pro shop to get fitted for a bow. Having the right equipment is critical. If your bow doesn't fit properly you may very well never be satisfied with it or how well you shoot it.
Also don't hesitate to ask any questions you may have. You will find a friendly helpful group here. (mostly)