Chelton Flightlogic
There are several unsolved software glitches and some areas of the software that are rather 'user unfriendly' which only come to light after you have taken delivery and started trying to use the system.
Then there is the large appetite for power which in our installation required an extra battery to meet certification requirements. This eats in to the range / payload figures so much that it is commercially unacceptable.
In a light helicopter it is overkill and a commercial disaster unless you are training pilots that are going on to larger glass cockpit laden helicopters.