Me too! I think it was around 2007 that i got an iRiver H10. My only other standalone music player I ever bought with my own money.
That’s awesome, I had an iRiver as well. Ended up putting custom firmware on it after a bit as the original firmware was buggy at times and lacked features. The device itself was surprisingly capable and could even play video.
Rockbox? I remember missing features on my H10 as well. I remember playing with rockbox themes and UI setting all the time, just for fun