^ That!
That... is why I have lived with (put up with) the bullet-proof Sony PCM-M10 for almost three years, now: Sound quality AND absolutely killer build quality AND other worldly bang for the buck - are all had at the expense of playback convenience.
The 96/24-capable Sony PCM-M10 has no bugs in the UI whatsoever, but it's a UI designed for recording, not for playback, so it has none of the usual DAP features, like shuffle, playlists, etc. It can't even sort by artist, album, or song. All you can do is manually move through folders that are sorted by the date and time they were written to the microsSD card! To achieve an alphabetical sort, you have to backup the card to your HDD, quick format the card, sort the folders on the HDD by name with Windows Explorer, then copy them back to the microsSD card in that order. Only then will they be displayed alphabetically when the Sony PCM-M10 scans the microSD card at startup.



I've already suffered in terms of UI convenience and there's no way iBasso (or Fiio, or HiFiMan, or anybody else) can better the Sony PCM-M10's build quality or bang for the buck, but if iBasso can deliver better sound quality via the DX50, in the same price range as the PCM-M10, I will stop using my PCM-M10 as a DAP, in a heartbeat - no matter how funky or inconvenient the DX50 UI.
All I need is SQ at a less than ridiculous price.
Mike