Good shooting at the GA state match last week. Guess I didn't get a chance to introduce myself. I was CSO for stages 3 & 4.
BTW, Ken Hackathorn highly recommended AO Express sights when I took his class last year. A friend had them and I gave them a try. I'd say they were very fast for 5-7 yard targets. I didn't like them for more distant 15+ yard targets. That front dot gets very big as the target gets smaller.