02RoadKing

I have an 02 Road King and I'm presently using a Rio SP250 to listen to mp3 while riding down the road. The RIO is a pile....it skips, fm sucks..... Anyways, I'm interested in the Sony MZ-NF610 and I was wondering if anyone has one yet and what they think of it's operation. My buddy has the 505 and loves it. His only complaint is the volume doesn't go high enough. I just need something with great tunes, FM , extended play and enough volume to hear the music under my helmet. thanks, Mike