Confidence in the product and availability os spares = a good helicopter.
MD must finance their spares organisation and it seems from the inputs above that, that is what MD are intending. Do they read this forum? I believe they do.
From my limited experience I find the 600 a super smooth ship in calm conditions however, when it's blustery it's uncomfortable and hard work to fly. The 900 is also super smooth and very nice to fly. It's weakesr link is the range. 3 hours should be the benchmark for all small helicopters