I have owned two Fiio MP3 (well, FLAC since you asked) players since moving on from my iPod, about five years ago. Starting with a farly basic X1 and after tiring of the terrible user interface, a much nicer X5.
These names won’t mean much to you I’m sure, unless you read hi-fi magazines. But Fiio have carved out a great reputation for “high res music” portables, mainly in the Asian market where they are big potatoes.
I think they are outstanding and better than many actual hi-fi components I’ve owned …..