I have an ipod and have about 600 songs on it and LOVE it. However, I felt it was kind of bulky for running/walking (though perfect for my office, home, car, and vacation). I just got a shuffle for my birthday and I love it. I pretty much just load the music on it and turn it on when I start out on a run/walk, and there is plenty of music to get me through. I am glad that the shuffle allows "shuffle" or plays in the order the songs are on the playlist. That is a great feature. I have to say, an mp3 player is the best toy in the world. I LOVE finding music, loading it and organizing it, and I have all sorts of fun playlists for all sorts of uses.