See my thread for a full guide on using a USB drive, with full tagging, playlists and everything else you can get on an iPod apart from the apps of course. I use a standard HDD, with no problems. No need for an SSD in my experience, much cheaper and works really well. It may not last 10 years, but neither would an iPod. I've used hard drives in cars for year, and this one has been in for the last 10k miles/3months within skipping a beat and that's on plenty of awful potholed backroads.
http://f30.bimmerpost.com/forums/sho...d.php?t=962767
At the end I mention about the weird entries on the playlist, just clear the recycle bin on the drive before ejecting.