For reference style headphones I would look at Sennheiser, Alessandro, Grado and AKG. I recently purchased a pair of Alessandro MS1 (they are an open style) and I am very impressed with the sound quality and the neutral presentation that they offer. For $100 USD approx they are of excellent value. They are easy to power as well and do not need a heaphone amp.

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne