It seems these days Audeze, Hifiman and Focal get most of the talk. Shure have not come up with something new in the Hifi tier since 5 years ago or more. Denon is a bit more active and the D9200 gets quite a bit of talk and has intrigued me for long. Both brand are not active in web forums and probably do not cultivate marketing techni1ues such as sending their new models to various internet influencers, something that even Sennheiser started doing.
I own 2 Shure and one Denon.
In my view Shure gets wearing comfort really right. I do not think I own more comfortable headphones than my SRH-1840 and the 1540 follow close. Soundwise they are both bested by other most expensive brands but I find they compete very well in their price segment. My 1840 gets more head time than my HD600, which is possibly its closest competitor. They are a clearer sounding than tge Sennheiser in a way i really like because they are still far from being bright or fatiguing. If I switch from the 1840 to the HD600 I want to switch back right away. Theybalso do not lack bass for me and they certainly do not add any to the recorded track.
The 1540 may be the closest thing to a closed version of the HD650 but the mids are less forward, which I like.
I also have a Denon D7200. It is an elegant and farly bassy sounding headphone but lacks in transparency if compared to the best. The bass is the best part, the mids are slightly too forward for me, the highs as I mentioned lack transparency. I sold the LCD-2C closed back when I got these because overall I liked them better and my neck is still thanking me.
However the Denon fets no play time since I got a TH900 Mark I which I realky love and represents my endgame in closed backs: they are that good as described.
I guess I should mention I only listen acoustic jazz and flamenco, hence take my impressions with 3-4 grainx of salt if you listen heavy metal or rap...