Northern Mist all the way. Without a second thought.
I had two different Super Ds (64" 47# and a 66" 55#) and wasn't impressed with either. The grips are small and round bellied and wallowed around in the hand, they had more shock than any of my Northern Mists, and they really didn't seem to like heavy arrows. I didn't find the speed that others seem to speak of either. They were very quiet, and very well made, but so are my Mists.
I realize I'm in the minority, but I just couldn't find a thing to like about the Super D other than being able to get one built in a hurry. But for the price of a basic Toelke, you can get a real over the top Northern Mist in a takedown.