pmelcher - No cost difference, just use whichever system works best for your needs. For the system your using currently the application in question is called Sales Manager Pro, to which there is a link to along the left side of the Sales Manager page where you can download/install this application.
ajfassociates - no and yes. If you just sign up for a new account currently, your getting the newest system automatically. That said however, since you just tried out the services late last year under a different username, you could if you wanted to just reactivate your old username and use that account instead of this new one if you preferred. (email us via the help link if you would like to go forward with that.)