That's a tough price range. I see some Audio-Technica's in that range that look good, but you'll have to check reviews carefully for sound quality issues. You'll probably want open back headphones. The Shure 1840 is excellent from mids on up, but the bass may not satisfy everyone. Extremely well made and exceptionally comfortable. In closed back, I see some Beyers like the T90 or T70, but they are known for treble peaks, and while comfort is good, I don't know about warmth after hours of listening. I've gotten used to taking mine off after one or two symphonic movements to cool my ears off. I recently bought a Audio-Technica for $700 USD that's not as good as another of theirs that costs $200 USD. So price doesn't correlate as well with sound quality as it does with physical quality.
EDIT: Going back over everything I could find, the only closed headphone in the stated price range that I thought offered good all-purpose audiophile sound quality is the hifiman HE500. That model may have some variation.