I think this is a good resource:
http://www.emrupdate.com/resources/p...mparisons.aspx
You'll definitely want to get permission before using it. I think they probably wouldn't mind you using the list of EMR, but the data they collected they probably won't want you to just replicate(at least without some significant acknowledgement). Who knows, just be careful with their data.
I think it should have some more columns like EMR Only vs. PMS(integrated or not). Also, some might have a hosted option and a non hosted option. What about years in business and other things like that. How about defining a feature set? It gets pretty overwhelming when you think about all the layers.