Sony DSX-MS60 DSXMS60 Marine In-Dash MP3/WMA/AAC Digital Media Receiver w/ Internal USB and Front Aux
I installed this in a 2012 HD Street Glide in place of the stock unit.  I was an easy enough install, and works great.  I like that you can sync an iPod or iPhone and plug it in and put in the tray, which will charge it while you ride and keep it concealed when you stop and get off the bike.