http://www.amazon.com/Cowon-Portable-Media-Player-Black/dp/B000OE2OPG/ref=sr_1_1/002-0764337-7075234?ie=UTF8&s=audio-video&qid=1188234732&sr=1-1
How about this one?
Although it's only built in 4GB, you can add SD flesh card.
For some time I used LOC in Mazda 3 and I didn't like it.
The sound from the subwoofer stayed in the back. I just couldn't make it sound in the front stage without external processing.
Now I have 880prs in the glove box and the difference is day and night.