
Sennheiser
HD 560S
Budget gaming king with clear sound, but tight fit.

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
I have the 80 ohm version as well. Super comfortable and sound great.
I can understand this and how it could be an issue. Most of my headphones are OTE. My consumer grade ones are not nearly as comfortable for really long term wear. I also have the Beyerdynamic DT 770 Pro 80 Ohm and the DT 900 Pro X with the velour ear pads which are very comfortable and I can wear them for hours at a time. If your ears get sweaty though, this probably wouldn't help. I wonder if Dekoni has some replacement pads that are more breathable for you?
If you are looking at Beyer I can speak to two models, the DT 770 Pro 80 ohm. They are closed back which means slightly more bass and passive noise cancellation. The soundstage isn't as broad as open backs. They have a mild v shape. The directional placement is ok. They are crystal clear and are considered legendary, having originally been designed in the 1980s and are still popular to this day, that's how good they are. The DT 900 Pro x are more modern and happen to be open back. There is no noise cancellation, you hear everything. They have a wider sound stage, better directional placement in games and instrument placement in music. When watching shows/movies I noticed the soundtrack in the background which is kind of cool and beautiful. They are detailed and allow you to hear things that you might have never heard through other headphones. The tuning is a little more flat compared to the 770s. If anything, if you use an EQ you could slightly boost the bass and treble a little. I don't use an EQ on them as I think they sound great as is. For open backs, I think the bass is good.
Of the eix main pairs of headphones that I use, three are wired and three are BT (all three of them can be wired though). I'm at home most of the time so my daily drivers are my Beyerdynamic DT900 Pro x and 770 Pro 80 ohm. I have a pair of Grado sr80x that I also enjoy from time to time. For wireless on-the-go use cases I usually use my AT M50xBT2. I also have the ULT Wear and JBL Live 770NC. My ears aren't trained well enough to notice a difference from BT, but my BT cans are all consumer grade, that's what makes the difference.
I"m going to go with the DT 770 Pro 80 ohm. They sound fantastic for music, gaming and movies. For closed back they have a surprisingly good sound stage. They have good detail retrieval and separation. They do have a slight v tuning but the mids are not scooped or anything. Across the spectrum, everything is well represented. Edit: you said open back, sorry. I'll leave what I wrote for consideration. However since you are looking for open back I'll recommend the DT 900 Pro X. They basically get the same review except with the advantage of open back.
It's cool seeing the DT 900 Pro x and the 770 pro 80 ohm in these. Those are currently my two favorite headphones for at home listening. (For on the go I like the ULT Wear and M50xBT2)
I love my Beyerdynamic DT 900 Pro x overall, but when I'm a loud space or want more bass the I'll switch to the DT 770 Pro 80 ohm. I have other headphones but those are my two primary. Yes, in some situations I prefer closed back over open back.
My first 'wow' moment headphones were the DT 770 Pro. They are amazing for their price and sound even better plugged into an amp. I'm using the ifi Zen DAC V3. My current 'end-gane' setup is the same amp but with DT 900 Pro X. The sound is just incredible and you will have a hard time finding headphones at either price point as the two mentioned above that sound as good, they are out there though but I don't know which one's they are. Your best bet is to go to local stores and test out as many as possible so you know what sounds good to your ears.
You make a very valid point. There are for sure headphones with 'better' bass. My DT 770 Pro and 900 Pro x have more textured and layered bass, so the quality is better. I think for their time, the xb500s but out a higher volume of bass than many headphones on the market, we are talking over a decade ago though. I bought my second pair about 10 years ago off eBay for around $200 USD, so they had gained some type of status as they originally retailed for ~80.
There are places that can convert it to a detachable cord. I'm not sure how much modding it costs vs just buying something else. The 770 Pros are what introduced me to higher end audio. I still love them as they are on a stand next to my laptop right now. I use them when I need isolation vs my open back 900 Pro Xs. I also have a few good pairs of Bluetooth headphones. They don't match my wired in terms of sound quality, but they have their place. Anyway, didn't mean to go on a tangent just to say I agree, each pair of headphones has their use case scenario. I love my 770 Pros despite the cord as well.
I've had very limited experience; the best closed backs I've owned are the DT 770 Pro. I don't see this as a bad thing because I have so much more to learn and explore.
At home on my laptop it's DT 770 Pro, 900 Pro X and Grado SR80x through the Zen DAC V3. Out and about it's Sony ULT Wear or JBL 770NC. I like all of my headphones for different use cases.
I also own 770 80ohm. Now I don’t have to look for any another closed back headphone. Punches way above its price
The 220 Ohm are fairly hard to run, so unless they're getting an amp, I would get the 80 Ohm instead.
Almost any Sennheiser headset. I have the original PC 360 G4ME, which are modeled after the HD558, and it's genuinely the most comfortable headset I've ever had. The velour pads are incredibly soft, and the clamp strength is just right. Even at 8+ hours of use I don't even register they're on my head. I would imagine the actual HD 558 or similar ones like the HD 560, 598, 599, 6xx etc are all just as comfortable. I also have a Beyerdynamic DT770, and while they're comfortable they're not *as* comfortable as the Sennheisers. Closed back headphones tend to feel inherently a bit more clampy and fatiguing. The DT990 are open back though and probably on par with Sennheiser sets.
I use beyerdynamic DT-770 PRO/80 Ohm and Yamaha HS7. Fits my room, hearing and wallet perfectly 😀
Any senheiser or byerdynamic within your budget. Some of the higher end ones you might need to get an additional dac and pre amp. Id recommend the beyerdynamic dt 770 pros if your on a budget (still over 150 but well worth it) or if you want some that will last the 900 pro x or senheiser hd 490 pros And yes as others have said I recommend getting a seperate mic as headsets usually arnt great value.
Oops yeah I meant the 770 pros, curse their naming scheme. Great headphones I've only just replaced mine after 6 plus years because I somehow bent the plug in. So yeah from now on headphones with a replaceable cord are a must for me.

Sennheiser
HD 560S
Budget gaming king with clear sound, but tight fit.

Sony
WH-1000XM4
ANC king, durable, but unreliable mic and touch controls.

Sennheiser
HD 6XX
Legendary mids, durable, but narrow soundstage and weak bass.

Sennheiser
HD 490 PRO
Super comfortable, wide soundstage for gaming, versatile pads.

Sennheiser
HD 599
Super comfortable, easy to drive, wide soundstage, open-back.

Ranked #1
Sennheiser - HD 6XX

Ranked #1
FiiO - FT1 Closed-back Headphones

Ranked #1
Sennheiser - HD 560S

Ranked #1
Sony - MDR-7506

Ranked #1
Sony - WH-1000XM4

Ranked #1
Sennheiser - HD 560S