I am a professional DJ and the iPod Nano 6G is one of the best MP3 players on the market in my opinion for purely music. The reasoning is that if I am traveling overseas/interstate for a gig, I can transfer about 30GBS of music to the nano and select my playlists for the gig while I am on the plane. Very handy as it gives me things to do on the plane as well as save me some time.
The Nano is microscopic compared to the other gear I need to take too.
The Nano is microscopic compared to the other gear I need to take too.