Well after all I think the easiest thing is what has the most support and documentation. I want to know what I'm doing and reduce the blackbox as much as I can. Since HumanIK has full docs and support from the community and Autodesk I think its better than a tool with less. This hasn't been exported/imported into Unreal yet...
My problem before with my initial test was that it needs to have the arms in T pose to get the control rig to work.