Closed-back reference headphone recommends?

I don’t know what the frequency curve of the Fostex T-40 are, but the 1 thing I love
about them is, the cord is twist-lock detachable, so if the chord gets damaged you
don’t have to throw away a $200 pair of headphones. I have tried to save most of
the major brands and the regular lead/tin solder does not hold. I hate trashing
$100-200 headphones because the designers don’t take into account the abuse
these phones will endure.

Thanks,
Brain