When selecting an EHR, you will probably see product demonstrations from at least 3 to 5 EHR vendors. It is important that, after you have seen them all, you have detailed notes that remind you what you liked and didn’t like about each one. You also want to make sure that you can make an "apples to apples" comparison of what will be very different products. One way to do this is to develop a standard set of criteria on which you want to evaluate EHR systems, and then ask everyone who will be attending the demonstration to grade the products based on that criteria.
The California Medical Association has developed a standard evaluation form that you can use. You may, however, want to tailor this form for the specific needs of your practice. For example, radiologists or ophthalmologists may need an EHR system with very specific imaging capabilities. Those physicians would probably want to give more weight to those specific functions.