I head a pair a while ago (Pioneer, not sure of the model unfortunately). They were fairly expensive cans (>$80). Sound was bad. Bass was loud, but the MDR-V300 have just as much. Voices were nasty, very quiet and not clear. Treble was the same, seemed very distant and unclear.
On the plus side, they gripped your hear no matter what. Very good for one ear monitoring. It's definitely a DJ product.