OK, its late but got my pair tonight and need to push this out before I forget all of this nonsense. As you guys have read online or watched reviews, people are dumping out their opinions on these and I hope something I say can benefit those wanting to hear a different approach to these. Yeah, I guess you can call me an "audiophile", I like to analyze music and sounds based on what the equipment provide. Sometimes that can demolish the enjoyment of music since you can get caught up in instrument separation, vocal performance, spacing and speed, etc. I do like to listen to speakers instead of headphones since that will give the ultimate experience but with little kids and little time, I can't do that as leisurely as I used to.
Now, as far as mobile headphones I am currently using XM4's (EQ'd to the Harman Target based on Oratory1990 settings) and AirPods Pros. Now I can included APM in that mix. These can't even compare to my Nectar or Stax or even the HD650's. Especially with my DAC setup and my amp's. Solid state or Tube so I won't compare them to those.
The Max's sound more pleasing to me than the Sony's or the Pro's. They are not more accurate than those, in fact, I find them to sound very similar to a V-shaped headphone. They have great amplification to drive these drivers, hence really not getting much distortion and different listening levels. XM4's teeter off on the high end of volume levels and I bet that is due to the power output. All the said stuff about being better at noise cancellation and premium build is accurate to say, they are a really nice pair of headphones. To my head, the XM4's are much more comfortable, these are clamping pretty tight. Not a fan of that. And heavy. That just sucks the "air" out of enjoying them over long period of time (over an hour).
Soundstage is wider but not by a foot. I would give it a buy if you like the other tangible features like Siri integration, seamless transition from one device or another, etc.
Also, I like the case. I don't have to ratchet or change my length of the headband just to fit in the case. That is genius. I like to set it and forget it. Positioning the drivers are critical on how a headphone sounds, so once I get it to how I like I don't want to change it.
UPDATE 12/19/20: They are going back. Not enough positives and can't wear them longer than an hour without getting a headache. Too heavy, too much clamping force, not enough musical talent to separate myself from my XM4's.