Hi. Really impressed by Oculus audio plugin for Unity. We need occlusion in our multiplayer VR game, I have tried Oculus audio SDK, Google Resonance and Steam audio. They have one thing in common, they cut off audio too aggressive. Steam audio has something they call partial occlusion which let you specify a radius which let you somewhat hear the sound around corners. But its still way too aggressive.
The first audio SDK with proper propagation, transmission and diffraction will have a huge selling factor when compared to its competition.