AKG K 701 are my choice for mixing. http://eu.akg.com/akg-product-detail-eu/k-701.html
I have also Beyerdynamic DT 770 Pro and Sennheiser HD 650, but AKG K 701 sound best to my ear, and are by far most comfortable on my head. They are open model and higher quality build than DT770 or HD650. Price is also quite fine, cca 180eur afaik.