I installed a CYA-100 shortly after they came out and wished I had looked harder for a AoA that had a variable pitch or volume to indicate the relevant AoA. The CYA has a visual indication, something like 6 or 7 bars, to indicate where you are in the programmable range. However there is only one point where the alarm sounds. If I were to purchase a new AoA indicator, I would look for something that would vary the sound depending where you were in the programmable range. With a variable audio you could fly the pitch or volume on final keeping your eyes outside the cockpit.