KFfan, I have the Dynon AOA indicator in my plane and have found it to be a very desirable, advantageous addition. Being a relatively new pilot (400 hrs) I find it very useful in short landings where you are pushing the limits on slow approach speeds. In using it I have found two things:

1- Down near the ground where you really need it, I don't have time to look inside the cockpit at a colored indicator.

2- My Dynon AOA has a variable tone that starts a slow beep in my ears at about 5 mph above stall. The beeps get progressively faster until it becomes a solid tone at impending stall. I just listen to the beeps and never take my eyes off the outside; I could care less about the indicator in the panel. The ones that just start saying "angle, angle, push" are no better than an old fashioned stall horn in my opinion. If you are buying a ready made AOA kit I would highly recommend one with a progressive tone, since not all of them have this feature.

Just my 2 cents on the subject.