Separate audio tracks per application!
Any youtuber recording game footage would use this feature, I am currently forced to use DXTORY if I want to be on Teamspeak and record footage at the same time!
This feature is an absolute must for me and the deceiving "allow multi-channel audio recording" box was part of the reason I even bought this software!
After learning it's only for surround sound I somewhat regret making this purchase (although not really because the performance is still outstanding even compared to NVIDIAs shadowplay).