I traded in my Auralic Altair G1 and I wish I had done it sooner.
The sound of the D2 is just a bit warmer, more analog, just the way I like it. The bass is a lot less booming. More defined and rounded. And the soundstage is noticeable wider as well. And I have the (subjective?) impression that it all sounds a lot tighter, more controlled, in the fast passages of the music.
I considered getting the T2 but I didn’t want to spend that amount of money.
Anyway, very happy with my decision.