For smaller works, sure it's great. However, with larger scale stuff it doesn't capture the essence like the DT880 did.
For instance, Bizet's Carmen is much better on the HD600. On the other hand, Carmina Burana is more engaging on the DT880.
I think that was the definition of an impulse. I moved so quickly to send a PM that it was almost like a reflex :)
Which recording of Carmina Burana do you have? Some are definitely better than others...