I have several headphones for mixing, including the Beyerdynamic DT 770 pro and the new Sennheiser HD 560s for picking out details in different frequencies, but when it is time to listen to the final master you need the truth, boosted frequencies is good for picking out details when mixing but it does not translate well to the outside world.
To my ears the Sennheiser HD 650 is still the best on the market in terms of giving you as many details as possible and still maintaining to deliver a neutral sound.