For me, I’m not a fan of the DSI sound so it has little value for my music.
Is it a rad concept and execution? Yes.
Do I admire and respect the two brilliant minds responsible for the product? Absolutely.
It just doesn’t have the sound I’m looking for which, from what I’ve heard during my demo’ing, is sort of dumpy.
The thing I like about the MD is it sounds great out of the box and has a lot of character.
The character it lacks can be supplemented with the UW side of things.
On the other hand, if you want to give the Tempest a try there’s nothing holding you back; especially monetarily.
Hell, you could do the trade, use the Tempest for samples, and then–when you’re done–sell it and get a brand spanking new MD and have loads of new food for it.