In studio set up, I personally think that accuracy of a headphones matters more during mixing than recording, so an open-back suits me fine as long as it is accurate while I'm at the mixing stage. Over long periods, I find them more comfortable too (I love my Sennheiser EH 350).
But I agree that a close-back would be better for recording, live or studio.
A good pair of close-back cans that also sounds good for mixing, that is also of great value? Sony MDR-7506
Might wanna try and check out Beyerdynamic DT 770 Pro and Ultrasone HFI-650, but they are a little more expensive than the MDR.