Yes, I know you're not supposed to mix with headphones, BUT 1.) I did a some damage to my hearing back in the 70's and 80's, 2.) I'm getting old, 3.) I only have KRK Rokit6 monitors, and 4.) I have a much better time of hearing instrument placement in a mix with headphones that you younger and/or undamaged audiophiles can hear with speakers. When I watch tutorial videos and they make changes to settings I typically can't hear the difference, except with headphones. My bass reflex Rokits give a falsely good bass response that doesn't replicate well to other systems so I have to compensate for that.
Anyway, since time marches on and I'm not getting any younger, nor do I ever expect this to anything more than a hobby, I've decided to break this rule and get a nice pair of headphones.
I'm looking at the Sennheiser HD650, Sony MDR-7520, or Shure SRH1840. Would anyone care to comment either from experience with these sets, or make other recommendations.
Grado 80s, 125, or 225's. Super clarity which those of us who have lost HF about 6-8K need. I love mine.
In my studio I have 2 pair of Sony 7506's that I also love as they are sealed back and a great price. Many also like the Senn HD280's for the same reason. The 7506's are probably used in more studios then any other set cans. I found the 7509 a little dark for me as they have a 50mm driver. I have not tried the 7510.
My main ones are AKG 701 which are super clear and open back and are more money, but worth every penny.
Good luck as the headphone market is jampacked with too many choices, really. It can make your head swim.