The headphones make my ears bleed - they're the perfect combination of shape and aural characteristics to give me an earache when turned off, or a huge smurfing migraine when turned on. And the wires are some unique thickness and plastic which is able to knot itself sitting undisturbed on a table. And they're about 6 inches long, so don't expect to pocket this thing..
It looked like a nice, convenient, cute little player, with added record and video abilities. The video uploading was a bit awkward (dumped my Miro directory into music folder and it would only access mp3's, couldn't find videos anywhere), and the voice recording was confusing. Needed to switch to MTS mode (which is USB mass storage compatible, including on Ubuntu), but it worked. For a week.
Then today I pulled the USB plug out (it wasn't even writing) on a winXP box and it blackscreened and stayed that way. Reboot procedure(hold power button) was obvious and it worked, but it booted into a blackscreen as well, every time. The volume didn't show up when it was plugged in, either. I spent the next hour googling for how to update the BIOS in recovery mode (which didn't work), then tried again with the "format disk" box checked, and it booted up again, sans my settings, songs + videos.
I took the opportunity, after that, to try out the rockbox bios. Hopefully it's not prone to such things. It's looking pretty awesome so far - ugly with the default themes, but the amount you can configure is epic, controls are reasonably intuitive, its radio tuner is orders of magnitude better (why? who knows), and it ships with a screenload of games & plugins. I can boot into the sandisk bios if I want to. You can even get voice menus for the hearing impaired or pocketted use.