I have been using the BD HD770 pro 250 Ohm for more than 4 years now. I use this with a Beyer Dynamic A20 headphone Amp.
it sounds perfect to me.
Music from my computer goes through a Cambridge Audio DAC Magic Plus Digital Audio converter into a mixing console where i mix the Kemper outs and the music to the A20.
For me this is the best solution to rehearse at home. Sadly that's all I can do for the moment as we still can not tour in Europe duo to the Covid-19 situation.