Hi guys
First ,I am a big fan of this great community and this is my first post
Secondly , I am looking for a very good headphone for listening to music and watching movies. I had enough of cheap earphones.
I did my research and ended up with this list:
 
Hifman 400i (I love it because of thier drivers and very close to buy one but the lowest frequency 20hz bother me , I think it is a little bit high comparing to other dynamic headphones. Is it noticeable on 400i and how to deal with it?)
 
Beyr dynamic dt990 250 or 32ohm
Audio Technical 2000x (the fact that the cables come attached to these headphones bother me)
 
Sennhieser hd700
 
Please help me to choose one or feel free to write what you think is better option than them.
Budget within 500$
I have Schiit stack
Sorry for my bad English
Thank you in advance

u can delete hd700 

zoro said:

 
Hifman 400i (I love it because of thier drivers and very close to buy one but the lowest frequency 20hz bother me , I think it is a little bit high comparing to other dynamic headphones. Is it noticeable on 400i and how to deal with it?)

Click to expand...

 
It's not "high," the dynamic headphones are the ones with a low response. If you look at planar headphones they're usually almost perfectly flat from 20hz to 1khz. If I'd be worried about planar response, it's that somewhere between 1khz and 4khz they tend to have a weak response, and then some rise sharply somewhere above that range, which at times can make them sound shrill overall, or you have a narrow dip next to a narrow peak that is more difficult to EQ properly than a couple of wideband cuts to trim the upper bass plateau (that makes 20hz to 40hz, where the response tapers off sharply coming from a tall plateau, even harder to hear) and then a narrow boost at 20hz to complement those.

Thanks guys
But also I need your recommendations and why you chose them
So far the winner is the Hifman he 400i , is it worth its price and how its performance? also please mention any headphones (if there any) within price range 500$ better than it.
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UPDATE
Hifman HE 400i vs Sennhieser HD 650 or 600 vs Beyerdynamic dt 880 32ohm vs Audio Technica 2000x
Which one ? and why ?
Please Help

Planars usually have overall better sound presentation than dynamic drivers (which you described as Tesla drivers - but that's only a trademark branding used by Beyerdynamic on their drivers with at least 1 'tesla' of magnetic power).
Simply put, they often have faster decay and more accurate bass detail.
Also you can pretty much ignore the 20hz thing, since planars mostly present sub bass in better detail and often more realistically than dynamics which mostly rely on acoustic venting to produce sub-bass frequencies at good volumes, while planars simply produce these frequencies directly from driver to ear.
 
The biggest drawback of planars is weight. Most of them are heavier than dynamic headphones.
If you're worried about discomfort being a possible issue during a 2 hour movie, then go dynamic.