Flexibility in five-axis milling strategies is an important feature to consider. If one is using a three-axis CAM package with several milling strategies,

why would one settle for having just a few five-axis strategies?
One novel approach which provides flexibility is a module inside automatic toolpath generation software for surface or solid models in mold, die and tooling businesses. Simply put, the module automatically converts a three-axis cutter path to five-axis, rotating the tool inclination angle enough to avoid collisions. This allows for great flexibility, because all three-axis finish cutter path strategies are then available for five-axis use.