Actually - no. My favorite headphones are my THX-00, followed by my TX0-RP, and then the Grado GH1, and the Grado PS500. I've never even heard any Beats.
I have owned:
Sennheiser HD600, HD650, HD700, Amperior
Grado: PS1000, PS500, GH1, SR125
And a nhoord based headphone with their new infra driver in a GS1000 type enclosure made from maple. This one is very nice, and compares well to the other high end Grados.
The perfect headphone...