I love how easy it was for me (a non-technical person)to learn this software, as well as its wide variety of features including but not limited too; CAD/CAM drawing capabilities (2D & 3d), electronic drawings with DWG support, BIM models in both AutoDesk format or native Revit formats - plus many others! The customer service has been excellent at all times we have worked together over our 2 year project life span so far!! This system really does what they say "they" can do! It's very flexible because you are able get your desired result by using multiple tools within one window which makes my job much easier than having two separate windows open simultaneously.
My main concern when looking into other programs like Prodesk / Adobe etc., were their steep learning curves compared to ease of use offered by Symphonys approachable interface design.