there are some main issues people complained about
1, some sound track are missing cause by the limit of the total quantity of the folders at the same level . this already fixed in the new firmware which should be release soon.
2, the limit of gapless playback, will be fixed in the next version after 45 days.
3, the disk format of TF card , the exFAT or NTFS may cause some bugs, which should be fixed by added a new feature so people can format the TF card in X3 to make sure the format is correct.
this feature should be added in next version.
4, there are some small distortion in the one channel when play ogg music , still working in this but can't confirm when so far.
And as I known, there are not any other DAP which can compete with us in every detail. and please share with me if there are. also remember I am here and listening to what people need and what people complained about.
Any news on the implementation of the navigation via "Category --> Artist --> Album" ?
This point, with the 4 mentioned above, is like the remaining MUST HAVE improvement to the X3. Afterwards its UI will be second only to Rockbox (from my point of view)... and I found it a bit to harsh for somebody to label the X3 UI as "primitive", especially if you compare it to C3 and many other other "audiophile" DAPs.