SanDisk Sansa here
It works well and was significantly less expensive than my daughter's and granddaughter's iPods. It's an older 4GB model, but a mini SD card fixed that. I use it for music, audio recording, and photos - no videos. It also has a built-in FM radio, but I never use it. On a vacation this past year, we used it in a rented van with a combination recharger/FM radio interface designed for an iPod.
I have a huge collection of MP3s on my computer (all legal!) and ease of transferring them was a prerequisite. I've found it to be at least as capable as players from Apple or Microsoft, but without the price premium.