Hey guys I need to get a hdd based mp3 player for my car. I was looking at the iriver 20gb one. Looks nice, but does anyone know if that has a laptop built in drive or a proprietary drive? And the battery? I know the Ipod Drive and battery has to be sent back and there is no way you can replace it. IRiver looks good to me for what i'm doing. What are some other mp3 players that are hdd laptop based with good battery power and at least 10gb?