This isn't all that relevant to the OP, but I looked hard at the DA-62 for a time and even test flew one, so I've got some thoughts there. I ended up just not being able to make the math work. It's a $1.3mm airplane that goes 175kts and isn't pressurized. A guy in a 1980s-era Mooney is going to beat me on almost every trip, and the Cirrus guys will, too! You can't move around inside it at all; while it's got a cabin class price, it doesn't have a true cabin. Sure, it sips cheap fuel (and it's nice not having to fiddle with mixture and prop controls), but if you're spending seven figures on an airplane and probably flying less than 200 hours per year, it's just not that big a deal. Yeah, it'd matter to flight schools or commercial operators, but not to a private owner. For $1.3mm you can own a slightly used turboprop that goes >300kts in the mid flight levels! It's also pretty lame that you're stuck with an old G1000; almost all new top-of-the-line GA aircraft today come with keyboards and touchscreens.
Long wings with low wing-loading mean tons of adverse yaw and a lousy ride in turbulence. The ground steering is so heavy that your leg will start to cramp up during taxi---seriously. The passenger center-stick isn't removable, which your wife won't like when she's trying to read a book.
A friend of a friend just got one, and he's had six ECU failures, two of which killed an engine on him. Diamond is blaming the engine manufacturer---which is their own subsidiary! And this brings me to something else about Diamond: I think they're dirtbags. I did a lot of research and talked to a lot of owners, and almost all of them felt like they'd been treated horribly by Diamond when Thielent went under. Apparently, they were deliberately not doing WAAS upgrades for DA-42 owners unless they purchased new Austro engines. A WAAS upgrade on a G1000 is fifteen minute software update, but they wouldn't do it. I watched a few interviews with the CEO, and he just looks like a slimy dude. I'd stay away. Save $800,000 and buy an older 310 or 414. Have pressurization, an extra 25 knots, and use your extra money to pay for the higher maintenance and fuel. You can easily add in a G500 for around $50k if that's important to you (better yet: find one where an owner already did).
On the other hand, though, the engines are truly wonderful. I think diesels are the future of light GA, and I can't wait until they start coming to other aircraft. The center stick makes it feel somewhat sporty to fly, although it kind of gets in the way at times. The gull-wing doors are cool.
