I too would be curious how it compares to the inexpensive Benjie models like S5, K9 or X1. Or the Ruizu X02.
The other players I have are more expensive and not a fair comparison with the Hommie J2. It does seem to have been done with a bit more thought than others I’ve come across though. You can always get back to the “Now playing screen” or the “Main Menu” with a long press on the back button which is something, for example, my more expensive Moonshadow MS1 can’t do.
If you don’t lock the player, which I’ve not found necessary anyway, the volume buttons on the side work immediately without having to wake the screen up first. They also skip tracks forward or backwards with a long press. So without having to turn on the screen or even look at the player you can alter the volume or skip tracks.