Avatar Systems is appropriate for basic routine medical visit charting. In my opinion, I would not use it for anythin beyond that. I was not impressed with Avatar's capabilities and customization. The system is great for locked down user level permissions.
I have only used it for exploration projects but understand that with additional modules (such as pit design and production rates) it can be used for production schedules too. The software acts as a central interface for all of the drilling data from the borehole trace with customisable graphics or traces alongside (e.g.: geology, mag sus, assay results, struc info, etc) to the exporting of sections for field interp or planning; and resource block modeling.
Lower cost and more user-friendly. My understanding is that the functionality is somewhat more limited but for our use in exploration it does the job and does it very well.