I really hope that this forum is good and I will not see something like "GO AND LISTEN TO THEM IRL" instead do me a favor and leave this thread. Only tech specifications and personal experience / opinion. I though that I found my dream web site - http://www.rtings.com/headphones. You can find everything from frequency response to ear temperature after wearing headphones (breathability) in addition you get fabulous filtering system but...looks like at least some measurements do not correspond reality. So I was looking for new headphones, found : Beyerdynamic DT 770 (32,250,600), audio technica m50x and m40x. Here is reviews that I found : http://www.rtings.com/headphones/reviews/audio-technica/ath-m40x-professional-monitor http://www.rtings.com/headphones/reviews/audio-technica/ath-m50x-professional-monitor http://www.rtings.com/headphones/reviews/beyerdynamic/dt-770 250om On rtings it is listed that M50x beats m40x in every aspect and that M50x beats DT 770 in sounds stage. I found out that a lot of people saying that m40x is way better then m50x and also that M50x do not have any soundstage compared to DT 770 (so do I after listening to demos), frequency response seems to differ from site to site (yes, I know that everybody uses different mics etc.). Measurements : Innerfidelity https://www.innerfidelity.com/images/AudioTechnicaATHM50x.pdf https://www.innerfidelity.com/images/BeyerdynamicDT770.pdf 600om Headroom Sound Demos : So my questions: how to compare headphones (soundstage, imaging etc), what are your experience with rtings and m50x, m40x, 770(all variants) in particular. Feel free to recommend closed (only closed), around 200, flat ( boost in bass as 770 is good / ok, but I'm not looking for beats) no sibilance allowed (heard from people that 770 can be high in highs for some people) with great imaging and relatively wide soundstage for closed cans. Thank you for your time.