While most of what you said is true. That 50GB on the S22 is the difference between GiB and GB. Samsung counts this difference between GB and GiB as part of the storage used by the system. labeling these conversion losses under 'system' is a strange practice and causes confusion.

For example, a device advertised with 512 GB of storage actually has closer to 476 GB (GiB) of usable space. Likewise, a 128 GB model has approximately 119 GB of storage, with 256 GB yielding 238 GB of space.

https://www.notebookcheck.net/One-UI-5-1-bloatware-is-not-consuming-60-GB-storage-on-new-Samsung-Galaxy-S23-Galaxy-S23-Plus-or-Galaxy-S23-Ultra.692149.0.html

Fiio K7 is perfect for me. With my Edition XS I run them on low gain with a balanced cable and run them at around 12-2 o'clock on the dial depending on source.

Great advice! That's really cool you had the same setup. The XS sound amazing to me through the E07k so I'll just run this setup for a few months and then upgrade to the K7.

Interesting, I could probably swing the K7. I may pick one up in the near future and keep the E07k as a portable solution if needed.

I don't have an opinion one way or another. My only experience is with the Fiio E07k. Sounds like upgrading the DAC/amp wouldn't do much for me anyway.

Will do, thanks! I'll probably get a longer cable as well. Something like this https://www.amazon.com/gp/product/B08D8XGLDL/

They really are. I was worried they would be too big since I don't have a large head but they're actually really comfortable.

That's good to hear. I have no problem driving them to volume levels too high for my comfort.

Actually my old headphones are M50 not M50x.