The ease to use, easy access from anywhere via mobile devices or computers (PCs). It's also very user friendly with an excellent customer service department who are always there when you need help! I cannot think about anything in particular - it seems like everything works great so far as we've been using this product since its first release back 2011/2012 at least. We haven't encountered many issues yet but if they do come up then their technical teams work hard to resolve them quickly. If you're looking into getting your own electronic medical records system, look no more because MCare has one which meets all our needs perfectly well without costing us too much either financially nor time wise.