Hi, Long story short ... my gf asked me to pick up headphones up to 400 EUR as my Xmas present. Till now I had AKG Y50 which I really liked and I am looking forward to the sound improvement. Headphones will be used 50% of the the time for traveling(using Sony Xperia or iPhone as a source) and the rest home or in the office(source Rotel RA-1570) Music: mainly Rock, folk, modern and bit of everything. I will need headphones that are easy to drive, interchangeable cable and a small jack. No need for noisecanceling/wireless/etc... Don´t know where to start to be honest .... after quick search on the internet I am considering Beyerdynamic, Hifiman, Sennheiser. Does it worth to look at B&W p5/7 as I love my CM9 speakers? What other brands to go to and listen? Thank you for your suggestions.