Which one do you think are better? I don't care about their prices, just sound quality. I already had those Philips, but I broke them, so i know what sound quality they have, just dont have much info about JAYS two.. If you could point out, which one has better highs and overall sound, I would...

Creative MA930 Koss KDX/100  URBEATS by Dr. Dre Philips SHE5105BK   which are the best? could you please sort them from worse to best by sound quality? and is those urbeats by dr dre overpriced against their quality? thanks for every answer.     I think those Philips SHE5105 has good...

Creative MA930 Koss KDX/100  URBEATS by Dr. Dre Philips SHE5105BK   which are the best? could you please sort them from worse to best by sound quality? and is those urbeats by dr dre overpriced against their quality? thanks for every answer.    

Philips SHE5105 Koss KDX/100  URBEATS by Dr. Dre Creative MA930   Please, could you sort them by quality of the sound from worst to best?in case, tell me some opinions? and do you think those beats by dre are overpriced against its quality? thanks for every answer. 

I know you audiophiles are good .. please, i need a help. could you please tell me how important is frequency.. is it big difference between 5hz-25khz and 10hz-25khz ? and what about 10hz-25khz and 10hz-30khz ?  and what about impedance.. ? whats  the maximum impedance you think i should have to...