So much so, that at some point I made a comparison site for mp3-players. But nobody cared. I made comparison sites for smartphones, laptops and monitors which became quite popular. But for mp3-players, it seemed like I am the only person on planet earth who uses them.
Personally, I still use a Sony Walkman NWZ-E585. For me, that is the best mp3 player ever made. It has a nice form factor, feels very good haptically, the navigation interface is ok, the sound quality is great, the noise cancelling too, and you can access the storage without having to install propriatery software on your computer.