I got the Bathys and the PX8 (since a few days) and I cannot make up my mind which one to choose. I am no audiophile, but I do do a lot of active listening (I am no good at doing two things at the same time) and 90% of my music is classical. I listen at my desk/lazy chair via my macbook so am fine with a cable, but I do want noise cancelling to block the noisy family out and transparency mode for when I want to listen to music and still be ‘available’.
Bathys pros: wired sound is great. It might be just 10-20% better than BT but it's worth it. Detailed, clear. Might EQ the bass up a little and lower the treble a touch. Sounds better (clearer, detailed) than PX8 for most classical music such as harp, choral, Bach. Nice big ear cups. Music sounds wider.
Bathys cons: after 30 mins the top of my head starts hurting. The transparency mode is unusable for listening to music as there is so much white noise, it's awful. In dac mode the balance goes off all the time, needed a balance-lock app to fix it. Stravinsky sounds better on the PX8. Quite thumpy when walking.
PX8 pros: much, much more comfortable on top of head. Buttons much easier to use and better quality. Better BT connectivity. Transparency mode much better and usable. Less thumping when walking. Gorgeous warm, full and 'nearby' sound.
PX8 cons: ear cups a bit small and gets a little uncomfortable after a while. Wired mode hardly makes a difference, so no high-res mode. Slightly less clear in choral and harp music, but great for Stravinsky. I can hear my heart-beat which is slightly annoying.
I can only keep one... and I have no idea which one. The Bathys is clearer and has more detail, especially in DAC mode, so I should like it better, but I am being swayed by the lovely warm timbre and easier-listening of the PX8. Wish I could merge them. Bathys' pain on the head is a thing, but the great sound quality counts too (maybe I can find some foam pads or something). PX8 seems easier to use and has a very persuasive sound.