My old M-Audios are dying so I need some new headphones; they'll be primarily used for late-night mixing etc. so need flat, accurate response (although I will always finalise my mix over speakers).
Not looking hi-end (sub-£150), has anyone got any experience with any of these:
KRK KNS 8400;
Beyerdynamic DT770 pro;
Audio Technica ATH-M50;
Any other recommendations?