I want to buy Pioneer headphones for less than £100 so I came up with these three models: SE-MJ31; SE-MJ51; SE-MJ71 However I'm really confused as to what the differences are between them. On the Pioneer.eu website, the MJ31 and MJ51 have exactly the same specs but a different look and price. There is NO MJ71 model. On other sites, the MJ71 look like the MJ51 with slightly better specs, have different colours BUT the MJ51 don't really exist (in USA?). Can someone please help me sort out this confusion? I think I prefer the MJ51/MJ71 look but I'm not going to pay an extra £10 if there's no difference sound-wise. Has the Pioneer website just got the specs wrong?