https://www.bilibili.com/video/av69445482
Based on his review, he thinks that you should either get the M6 or DX160. He says that M11 isn't outstanding in the sound department and he would rather get M6 for system performance or DX160 for sound quality performance.
P.D: it seems that people in the comment section tend to preffer the DX160. They also agree that:
- For sound quality and screen: DX160
- For system control fluidity: M6
- For portability: R5
- For build quality: SR15
- The economic one:N5 II