Todd,
I agree with Chris. I have one partner who has been using e-clinical for quite a few years, he started before our office transitioned to A.C. His 5 year software cost is 35K, and mine is 6K, but he chooses to stick with e-clinical. I do not quibble, but I do not pay his e-clinical checks either. I pointed out this difference in cost, one time, but I sure as heck am not going to tell him how to run his business. But you can run a partnership with a partner using a different EHR quite easily.