1. Very very very few DA42s are currently flying, and the owners of those that are very unlikely to advertise any problems; they will try to get a resolution through their dealer.
2. Never read anything from press releases
I do wish the DA42 luck. It's a nice plane. I have seen a couple of the G1000 versions close up and Diamond appear to have taken on board some earlier comments about IKEA-kitchen-like internal finish. Much better now. But only time will tell about the engines, no way around that.