My mom's still using a Sansa Clip+ upgraded to the latest original firmware with a 32GB MicroSDHC card. I've offered to upgrade it to Rockbox a couple of times, but she doesn't want to play Snake or Doom or mpeg video on it's monochrome oled screen, and doesn't even want any audio enhancements beyond the built-in EQ presets. Probably better battery life without the Rockbox firmware, but still, an MP3 player that can't play snake seems lacking IMO.
I have an
iRiver H10 with an old rockbox firmware installed. I think it has a mechanical hard drive. I made a
custom theme for it - 3 custom fonts and all to look like the old default theme from Winamp. The audio fidelity is great, and it can play doom and some Gameboy ROMs and stuff. I used to use it with a headphone amplifier and some Koss Porta Pro's
... The internal drive is only 4.8GB - kinda pathetic by todays standards, but still over 1000 songs at standard bitrate. It also plays most tracked and video-game ripped formats. Battery life is still great - I think 7+ hrs per battery last time I clocked it. I have 2 extra batteries somewhere that I refresh every couple of years. Since I have never used it in recent memory, it's yours for cost of shipping from BC Canada if ya want it.