I just received the 580cfm blower. Let me know if you have any questions. I will be trying it out tomorrow.
You are going to utterly love it. Just be aware that the long battery life advertised is for idle speed, the slowest. If you crank it up, you will not only get the job done quickly (blow everything over into neighbors yard), but you will use up that battery really quick. With that expectation you will be amazed.