Easy navigation between our billing software (Medisoft) as well as insurance carriers via this program. It's also easy to upload claims data into MediSoft using their interface! I wish there was an option within WF4/WF5 where we could sync up directly from my calendar instead of having 2 separate programs open at once - but it works great when everything needs attention immediately after hours are over anyway :) Not much dislike about anything here. We use them primarily during business days so no issues yet. They've helped us organize some crazy amounts of billings each month which makes paying bills super simple!!