I have mine just under the glare shield Jim with no audio, although that option was available. I agree that you don't want to be looking down on short final but in the position just under the glare shield, I have it in my vision when looking at the touch down point. It is very clear to see it going from green to orange and then red. My personal preference is visual over auditory - I don't like audio when flying (don't play music or have phone hooked in when flying) - I think it is a case of what is effective and then training yourself to use the information it provides - same as referencing airspeed indicators f you don't have AOA.

cheers
r