Hi, I have found small bug on D100 - on the lowest airport in the world (Metzada, Israel) I have not been able to set airport altitude -1240 ft. The minimum which efis allowed to me was "only" -1200 ft 
But all other things included autopilot worked well (even when outside temp. on the runway was about 45°C) and I was very satisfied with Dynon products.
But all other things included autopilot worked well (even when outside temp. on the runway was about 45°C) and I was very satisfied with Dynon products.