If sound quality + local music + non-android is the goal there are plenty of lossless audiophile dedicated devices with DACs and amps built in on Amazon, with some nice designs:
Music is very important to me. I'm considering the WM1ZM2, but I've seen a lot of great reviews about the FiiO and Surfans - but the F20 doesn't have Bluetooth (ok if LDAC and AptXhd are supported) and the F35 doesn't have USB-C.
The M11 plus has both BT+ USB-C, along with hardware buttons. If it can give me better audio and battery life than the WM1ZM2, I'm interested!
Honestly, I have trouble finding out if these devices even do playlists, and if so, what format?
I have a sneaking suspicion that, while I have some "musts," I probably don't even know the right questions to ask, and I guess forums for this kind of thing stopped existing.
I owned a FiiO many years ago, took it travelling, drowned it multiple times and it died underwater, still playing music on a boat after like 6 years of constant use and abuse. It's the best device I ever owned.
https://www.amazon.com/FiiO-M11Plus-Resolution-Portable-Blue...
https://www.amazon.com/Surfans-F35-Resolution-Music-Player/d...
https://www.amazon.com/iRULU-F20-Bluetooth-Lossless-Resoluti...