My 4GB iRiver Clix is still working fine as the day I got it back in 2007. Been meeting my needs for music when I am on the road, and I am still a long long way from filling its memory up.
And when I am selling this sort of stuff on the 'bay or on Amazon, non Apple players seem to do quite well for me, especially various flavors of the SanDisk Sansa line (they need to make a player called the Arya, I think). Then again, Walkmen, Discmen, and some of their Panasonic and RCA counterparts have pretty much become bread and butter products for me on both sites as well. Go figure.