I have tried to A-B those two, and I like the Audeze the most. But it was a very close match.@Nevi
If you intend to pick up the Audeze LCD-X I would suggest you take a good look at the HiFiMan Ayra which is slightly more expensive.
On the net and youtube the HiFiMan Ayra beats the LCD-X in all round performance except for very strong bass with great punch and slam which the latter excels. If you do only enjoy such strong-bass music then go for the LCD-X otherwise you'll need to EQ it to bring it to almost on par with the HiFiMan Ayra
For OTG use I do have the SONY 1000XM3 BT headphone