I would like to know as well. I am trying to decide between the two.
I've had a chance to listen to the Taurus MkII on a number of occasions, at shows and at my local dealer. I currently own the MJ2, am running it with '74 Reflektors.
I really like the Taurus - to my ears it has a slightly fuller sound than the MJ2, punchier, more impactful low end. That punch comes at the expense of absolute transparency and 3D soundstage, however. MJ2 is more *whoa* detailed overall. I "fill in" the MJ2 low end with a vintage McIntosh preamp with EQ, when needed.
Two specific tracks that highlight the Taurus low end are 1) Toto's "Without Your Love" - the beginning hits as well as 2) the double drum beat at the beginning of Hotel California. This isn't to say the MJ2 is lacking, but that the Taurus's impact is eye opening on both LCD-X and Senn HD800, driven balanced. The Taurus also exhibits a distinct sound character balanced output vs. SE. It's weird, google other reviews.
(FWIW the GSX-MkII has greater transparency and equal bass impact vs. the Taurus, but costs ~$1k more. Money no object, I'd go for the GSX, but then you're in Rag territory... little more you're in Liquid Gold territory. never ends)
Ultimately I bought the MJ2 b/c 1) it's more detailed than the Taurus 2) is much cheaper 3) can tube roll and 4) 'merica! Also, Aurelic service reputation is ok/spotty vs. Schiit's stellar rep.