Oh I see. I'm a complete noob when it comes to these high end headphones but I'll definitely look into all three and see if i can make sense of any of it. It is 5 am here though so Im off to sleep. Thank you so much for your very helpful insight. Excited to get my first pair of real headphones
If you think these are high end, you ain't seen nuthin' yet.
Oh and if you need it, I do have a review comparing the HFI-580 and M50.