Looking For Best Headphones

Hello, I have seen all the threads here I am searching Best headphones I couldn't find yet Could someone can tell me which headphones are best For listening to Music.
You have opened up a real can  of worms as everyone will give you different suggestions , here goes for me I have Sennheiser HD 800 which to me are superb phones but it depends what you listen to. I listen to only classical but my phones are great for that being super clear and very dynamic. Now if I had plenty of money I would go for Abyss AB 1266 Phi.
They are simply stunning phones, super clear and articulate ,they are a phone for a lifetime but being an old geezer I can't afford them and also my wife would kill me !!
I have spoken about my favourite phones but you also have to think of headphone amplifiers to go with them, I have the Luxman p-750u amp which I will say is one of the best out there and will drive virtually anything. Good luck in your quest.
This question will bring you lots of subjective answers, so here is mine. There are no "Best" headphones for listening to music! I have listened to Stax headphones since the early 90’s. I currently have the 009’s. I love the electrostatic sound for its quick, clear transparent sound. It truly sounds like a window on the soundstage. I wanted a more intimate sound so I bought a pair of Audeze LCD-XC, and a McIntosh MHA 100 to drive them. The Audeze are incredibly comfortable (albeit heavy) and it would be hard not to like them. The sound is powerful and dynamic but I miss the transparency of the Stax phones, so I move between them.

Could I find a better sound if I spent more money? Maybe. You didn’t mention your budget, but I suspect it’s not unlimited. Jim’s comment above indicates that he loves his Sennheisers, and I’m sure they are great as well. My advice would be to settle on a budget and audition as many as you can. Find a pair that you like, and can live with long term. If you constantly chase different, more expensive headphones it will get expensive. When these lockdowns end, try to attend a Hi-Fi show. They all seem to feature a demonstration room for headphones. Believe me, you will find a pair that you like and an amplifier to drive them. I recommend a tube amp. Good luck in your search.
How much do you want to spend? Arguably, the best bargain reference headphones are the Sennheiser 600 and 650. You can find Senn 6XX on Massdrop for a good savings over the official ones, and they are identical.

The Sennheiser 6XX paired with an Audioquest Dragonly DAC/amp are a sweet combo for listening to Tidal via phone/tablet.

The price goes up from there, especially of you have to add an amp. In no special order (and they have different models)... more expensive ones could include:
Under $700 https://www.theabsolutesound.com/articles/2020-editors-choice-headphones-under-700


I can’t find the headphone review site that used to be my reference... it was absorbed into Absolute Sound’s vortex :(

A suggestion would be to check out some Reviews to gain some insight into impressions, models (differences) and Driver Type.
Darko does many Reviews on Cans, and Headphone Amps / DACs.
A good Amp makes a big difference ... also FYI > IEMs can be very nice
for an exceptional experience.
Listening for yourself if possible is best ( CanJam ).
A DAC with a crossover / blending feature makes a difference as well.
My listening is done with the two types of  Can drivers, Dynamic and Planar both and two amps with one DAC.
The equivalent of two separate systems ...

Best place to learn about headphones is head-fi.com

I think the main thing to figure out is what headphones do not give you fatigue. Then how much to spend to on those non-fatiguing headphones. I hated my prior Senn 600 headphones because of fatigue with my Benchmark DAC3 HGC preamp/DAC.

I now have 2 headphone amps, a $3000 one and a $500 one. For headphone ONLY use the Topping A90 at $500 is highly recommended by me and is very close to the $3K Benchmark HPA4.. It is a neutral sounding amp. It goes great with my $3K Meze Empy, a warmish sounding headphone. I have not heard the $300 Meze 99 Classic but from what I have read on Head-Fi it supposed to be similar in sound to the Empy.

Your choice of amp will also figure in on the fatigue factor. I had a $2K headphone amp that gave me fatigue and it was replaced by the amazing Topping A90 for 1/4 the cost.
Best for what?  Budget?  Sound signtature?  Comfort?  Type of music?  Open back?  Closed back?  No wonder Thor is angry!  No easy answer.
What sound characteristics are most important to you?  What’s your budget?
Best for me. No telling what:s best for you.
Air pod max. Buy nawoooooo.
If you have big budget Hifiman Susvara and Abyss 1266 Phi TC are the absolute best ones.You will also need serious amplification with both of them.
I am looking at the RAAL SR1a as a second headphone. It is supposed to be unlike any other headphone in that they are closer to sounding like speakers. This headphone cannot be driven by regular headphone amps. There are 2 specific headphone amps that can drive them, 1 by Schitt and the other by RAAL.

RAAL also provides a INTERFACE TO AMPLIFIER box that can be used  to hook up a 2 channel amp to use as the headphone amp. I got interested in this headphone because of this 2 channel amp support and also the fact that the SR1a was designed using the Benchmark AHB2. I own 2 of these amps and it could be an ideal match. The USA distributer (or owner) is local to me so I will try for a demo after COVID. Low priority though.

My dealer told me that the Hifiman Susvara and Meze Empy are the 2 he owns and have some similarities. I own the Meze and love it with the WyWire Platinum XLR (much better than stock). 
The answer is obvious. If you own a pair of head phones that you like the tell us how much the cost and of course are you using an expensive head phone amp with expensive upstream gear...come on people you know the drill...price, gear what the hell are you listening to 
They are the ones you want to listen to all night and not take them off your head. Yea them.
Flyby alert!!!  OP MIA. 
What ever phones and amp you choose remember that the cables from the wall to your phones and everything in between are extremely important. One bottle neck inferior cable can ruin a potentially awesome system. For me it was a good digital cable between transport and dac which was a necessary upgrade. Don’t scrimp on cables!! Try before you buy.
Focal Elear. Open back only way to go.
The best is what sounds the best on your head and what is the most comfortable on your head while they play the kind of music you want to hear because if they are good for you, you will not want to take them off.