I went for Focal Listen Pro’s (around £160) - ordered from Germany - will report back once arrived. I was attracted by the high ‘wearability’ cos I listen for many hours while working, plus high sensitivity (118db) so can be driven even from a laptop listening to FLAC files, and good range 5 Hz to 22 kHz.
To be honest its a rabbit hole once I delved into various headphones / comparisons / reviews. So I just made a ‘this should be OK’ decision rather than 'this is 100% the best VFM.
Background music helps me ‘zone in’ when doing CAD work. Blocks out the outside world !