I just got the HD480 pro in the mail. Been using them all morning for tracking and mixing and honestly I love them.
I was mostly presented with two options, construct a wall in my home to allow me work on mixes and production at all hours. Or I could just buy some good closed headphones. My production room is kind of, not great as well so speakers only go so far even with a ton of treatment. I am quite handy and have plenty of experience with woodworking, but I just don't know how good I can make drywall look. My headphone search was kind of annoying, seems like most closed headphones are kind of not good. Most seem to have nulls in the mid range, terrible HF peaks, are uncomfortable and break, or really any combo of those. HD480 seemed to tick pretty much every box so I splurged on them. So far very happy. I use them exclusively with Goodhertz Canopener which really brings those, and really any headphone/iem to life IME.
I really need something that I could track and do some mixing on that wouldn't require major reworks when going back to speakers. My last pair were DT770 and even with EQ, I had to redo everything to an extreme degree. Needed something with replacable pads and headband. I considered the DT700 prox but the headbands fail very predictably and are a downgrade from the DT770. Also wanted a pair that I didn't have to worry about having EQ for on my master while I work. I do still think these need some EQ in the lower mids, I can live without it while I work on projects. Fit was a major factor and Senn's oval earcups always fit my head really well, I often forget I'm even wearing my HD558. These are super comfy, they do a get a bit warm but nothing offensive for me.
I think the low end could come up a bit but that's an easy fix, and I'm conflicted on the build quality. On one hand, it's a lot of plastic. On the other hand I think you kind of have to use plastics to get headphones this light. Detachable cable is nice but I'll probably never take it out. I also like coily cables, fight me. Pretty expensive headphones but totally worth it for me. It's also a business expense for me so not that big of an investment.