Audio latency OpenAL or RemoteIO Audio Unit

Question

I have non-looping audio that I need to have as little latency as hardware-ically (technical term) possible on iPhone/iPod touch. At an extreme, something that smoothly plays 10-20 samples in under a second, based on touches.

Who is king for this task? OpenAL or Remote IO Audio Unit, and why?

Answer 1

RemoteIO is because it's the lowest level interface.

My buffer size is 512 frames, which at 44.1kHz is about 11ms.