I have one and really like it, but I still like to slalom ski some times and take my boat to a private lake. The V-drives don't cut it for slalom in my opinion. That being said, I'll probably get a V-drive next time and just ski when I'm out in my friends DD.
I put a 750 on each side of the engine, a 1/2 filled sack in the trunk, MLS (400lbs), and wedge. I have ridden behind new and old VLXs, LSV, and a bunch of other boats. My wake is still one of my favorites. The transition is a bit shorter than the V-Ride, don't know why since it's the same boat, but it is. Also, 70 feet is about as far out as you can go at 23 because the transition gets too abrupt further back, whereas in the V-Ride you can go 75 at 23 easily.
I would only recommend a D-Drive if you slalom ski, sacks on the floor aren't a big deal to me, but V-drives aren't much more expensive and you should get the right boat for you. If you want a D-Drive though, a Supra Launch and the I-Ride are probably the only two I'd consider.
Here's a video taken from my boat at 75 ft. 24mph (the last trick or two are behind a Nautique 211). http://www.wakepics.com/view_single.php/Jakober-s-NWWF-Video_wakeboarding-photos.html?medid=20308