Different people - different preferences. I currently have HD600s, DT880 600ohm, K701 and Grado 325is. They all get roughly equal head-time, and I appreciate them all for their particular sonic signatures.
Personally I found the HD650 was just a little too laid back for my tastes.
Apperently you have all the "seat" that you can get, from the front row, middle row, and the back row
Great collection sir brooko