about the TAGs support in X3, we sitll need more time to fix it . in China, X3 launched marekt in 3 months ago, but most user in China tend to use the folder to play music, but it is different in Western regions,
just like Android VS IOS, it make us a little difficult to support both very good at the same time, but all should be fixed in the new firmware.
Anyway, if X3 can't meet your requirement about the Tags / music format, there probably not any DAPs can do that. We have purchased all the DAP for audiophiles . but I can say this is the true. and we will try to become the only one who can take care everyone.
for example , do you need a CUE support? I think most people never heard it before, but it is very important for Chinese user, but at the other hand, almost 99% Chinese people download MP3 or other music from internet or just copy from the seller. and manage
their music by folder, they never try to manage the music by Tags. and that is why we display the files name but not Tags because it will display nothing if we do that.