Narrowed my choice down to NAD HP50 - my ideal subbass responce, shame about the looks and glossy plasticy build.
Sennheiser Momentum 2 - probably best midrange, reduced treble veil, bigger earcups, very lightwieght, not fussed about the hinges.
Focal Spirit Pro - good value and robust, better bass response than the momentum, but worried they might get harsh at higher volumes.
DT770 Pro 80 - Great value, but I don't mind spending a little more for better SQ.
It would be nice to see what Tyll thinks of the Momentum 2 since the originals got dislodged from the WoF. MacedonianHero seems to be the only person whose had them all. He thinks they are much improved, so much better that they top the HP50. I'm tempted to try them as a next step.
The HP50 has similar measurements to the FSP and is $50 to $100 less, so that's a good value.
Why would the FSP get harsh at higher volumes? It doesn't have nasty peaks in the frequency response. I owned it. It's still my favorite headphone.