Tiemen
Headphoneus Supremus
Having had HD650 I have to confess that timbre of DT150 and naturalness of vocals is much better with Beyers.
Hifiman 500 which I have been auditioning, were too bright sometimes and not enough full at the bottom frequencies (but detailing was very good)
Audeze seems to be a point on horizon, but prices are crazy...
I prefer the HD650, especially for the way they handle sibilance. The pair of DT150 I have can be rather sibilant, the HD650 is more forgiving.