AKG 271 for studio use; great isolation, sound quality and comfort.
I have had a bad experience with that set of ATs when they showed up for free; they were low-mid-rangey with terrible top end, so out they went.
Never been disappointed in AKG, and I like them better than the top Sonys, which hype things a bit more than I like.
For 'after-recording' critical listening, I too have heard good things about the AKG 701s. If you really want to blow your finances, the Stax series of electrostatic headsets are unbelievable, but definitely just for listening, not tracking.
But short answer for your purpose: AKG 271.
Best,
C