To be perfectly honest, when it comes to moving your stuff to the cloud, the main questions to ask are:
1. How much downtime can I afford?
2. How much downtime do I have now?
If you are a solo doc and do-it-yourself computer person with a disaster for IT, then you will be well served by going to AC's SaaSy. Your downtime will not go away, but it may be a VAST improvement over what you have now. People in this situation may wish to move to AC over the Cloud now and not wait for phase II.
However, if you are a practice and you have some type of Sandeep, Bert, or JamesNT for your IT person, then SaaSy may be a big mistake for you.
It all depends on whatever situation you have.
JamesNT