Could anyone give me an opinion on which is better in comfort, quality and sound isolation between the HD429 and HD439. The only music i listen to is Metal and various sub genres of metal. Thanks

Audio Technica Solid Bass ATH-WS55i - http://www.amazon.co.uk/gp/aw/d/B005PWMKII/ref=mp_s_a_1_1?qid=1385760303&sr=8-1&pi=AC_SX110_SY165 Sennheiser HD449's - http://www.amazon.co.uk/gp/aw/d/B005N8W214/ref=mp_s_a_1_1?qid=1385760396&sr=8-1&pi=AC_SX110_SY165

HD 429's - http://www.amazon.co.uk/gp/aw/d/B005N8W1Q0/ref=mp_s_a_1_1?qid=1385760154&sr=8-1&pi=AC_SX110_SY165 Pioneer SE-MJ751's - http://www.amazon.co.uk/gp/aw/d/B0073T2LNA/ref=mp_s_a_1_1?qid=1385760244&sr=8-1&pi=AC_SX110_SY165

Hi, I was wondering whether you guys could help me out in choosing a pair of Over ear Headphones for use with my iPhone for music. The ones I've seen which are in my price range and look good are: Sennheiser HD429 Pioneer SE-MJ751 Audio Technica Solid Bass ATH-WS55i Sennheiser HD499 The only...