I don't know if it not a dealer I would shy away. Dealer give you classes, and all sorts of help. You will need it with the Diamond, I just bought one and NOT for that...but my dealer gives lessons, has clubs, and anytime there is a question or problem they help. That is priceless.
The software that goes with it needs some instruction(anyway for me it did).
Do as you wish but buyer beware I would say..