I just finished up my first flight with the new 2 blade Hartzell top prop. Given that most conversions go the other way I thought that I'd offer some observations:
1. The prop noise is different, but not noticeably louder from one to the other.
2. The new prop definitely accelerates better, climbs better and is faster at cruise than the old prop. However, my suspicion is that this is more of an indication of the condition of the old 3 blade vs. it's actual "new" performance.
3. The balance/vibe seems pretty good, but I'm going to take the previous suggestions and get a dynamic balance after 10 or so hours.
4. It's amazing how quickly getting up in the air can make one forget about how many thousands of dollars it takes to routinely get there.
Thanks to all who have offered advice during my different debacles of first year Comanche ownership.